"K9" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "canine"
      },
      "expansion": "Pseudo-acronym of canine",
      "name": "pseudo-acronym"
    }
  ],
  "etymology_text": "Pseudo-acronym of canine, by phonetic similarity of the letter and number names with the two syllables of canine.",
  "forms": [
    {
      "form": "K9s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "K9 (plural K9s)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "K‧9"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English gramograms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English number homophones",
          "parents": [
            "Number homophones",
            "Rebuses",
            "Terms spelled with numbers",
            "Terms by etymology"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pseudo-acronyms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Law enforcement",
          "orig": "en:Law enforcement",
          "parents": [
            "Crime prevention",
            "Emergency services",
            "Law",
            "Crime",
            "Public safety",
            "Justice",
            "Criminal law",
            "Society",
            "Public administration",
            "Security",
            "All topics",
            "Government",
            "Fundamental",
            "Politics"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Working dogs",
          "orig": "en:Working dogs",
          "parents": [
            "Dogs",
            "Canids",
            "Carnivores",
            "Mammals",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2003, Nicholas H. Dodman, If Only They Could Speak: Stories About Pets and Their People, page 248:",
          "text": "Police working dogs (K9s) often have extremely close bonds with their handlers.",
          "type": "quote"
        },
        {
          "ref": "2003, Trevor J. Orsinger, The Firefighter's Best Friend: Lives and Legends of Chicago Firehouse Dogs, page 90:",
          "text": "Originally a K9 dog for the police department, Captain was asked to resign for unknown reasons.",
          "type": "quote"
        },
        {
          "ref": "2005, Priya Kapoor, Nandita Jaishankar, VIPs: Very Important Pets, page 71:",
          "text": "Apollo, part of the New York Police Department K9 Search and Rescue team was on the scene of the disaster just 15 minutes after the disaster",
          "type": "quote"
        },
        {
          "ref": "2006, Asa Nonami, Juliet Winters Carpenter, The Hunter: A Detective Takako Otomichi Mystery, page 134:",
          "text": "The Saitama Prefectural Police Department, for example, had no K9 units of its own, and relied on contract dogs exclusively.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A trained police dog."
      ],
      "id": "en-K9-en-noun-0GPXZnxn",
      "links": [
        [
          "police dog",
          "police dog"
        ]
      ],
      "synonyms": [
        {
          "word": "K-9"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈkeɪnaɪn/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/kəˈnaɪn/",
      "tags": [
        "Received-Pronunciation",
        "rare"
      ]
    },
    {
      "ipa": "/ˈkeɪˌnaɪn/",
      "tags": [
        "General-American"
      ]
    },
    {
      "audio": "en-au-canine.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d0/En-au-canine.ogg/En-au-canine.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d0/En-au-canine.ogg"
    },
    {
      "rhymes": "-eɪnaɪn"
    },
    {
      "rhymes": "-ænaɪn"
    },
    {
      "rhymes": "-aɪn"
    },
    {
      "homophone": "canine"
    }
  ],
  "word": "K9"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "canine"
      },
      "expansion": "Pseudo-acronym of canine",
      "name": "pseudo-acronym"
    }
  ],
  "etymology_text": "Pseudo-acronym of canine, by phonetic similarity of the letter and number names with the two syllables of canine.",
  "forms": [
    {
      "form": "K9s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "K9 (plural K9s)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "K‧9"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English gramograms",
        "English lemmas",
        "English nouns",
        "English number homophones",
        "English pseudo-acronyms",
        "English terms spelled with numbers",
        "English terms with homophones",
        "English terms with quotations",
        "English words without vowels",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "Rhymes:English/aɪn",
        "Rhymes:English/eɪnaɪn",
        "Rhymes:English/ænaɪn",
        "en:Law enforcement",
        "en:Working dogs"
      ],
      "examples": [
        {
          "ref": "2003, Nicholas H. Dodman, If Only They Could Speak: Stories About Pets and Their People, page 248:",
          "text": "Police working dogs (K9s) often have extremely close bonds with their handlers.",
          "type": "quote"
        },
        {
          "ref": "2003, Trevor J. Orsinger, The Firefighter's Best Friend: Lives and Legends of Chicago Firehouse Dogs, page 90:",
          "text": "Originally a K9 dog for the police department, Captain was asked to resign for unknown reasons.",
          "type": "quote"
        },
        {
          "ref": "2005, Priya Kapoor, Nandita Jaishankar, VIPs: Very Important Pets, page 71:",
          "text": "Apollo, part of the New York Police Department K9 Search and Rescue team was on the scene of the disaster just 15 minutes after the disaster",
          "type": "quote"
        },
        {
          "ref": "2006, Asa Nonami, Juliet Winters Carpenter, The Hunter: A Detective Takako Otomichi Mystery, page 134:",
          "text": "The Saitama Prefectural Police Department, for example, had no K9 units of its own, and relied on contract dogs exclusively.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A trained police dog."
      ],
      "links": [
        [
          "police dog",
          "police dog"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈkeɪnaɪn/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/kəˈnaɪn/",
      "tags": [
        "Received-Pronunciation",
        "rare"
      ]
    },
    {
      "ipa": "/ˈkeɪˌnaɪn/",
      "tags": [
        "General-American"
      ]
    },
    {
      "audio": "en-au-canine.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d0/En-au-canine.ogg/En-au-canine.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d0/En-au-canine.ogg"
    },
    {
      "rhymes": "-eɪnaɪn"
    },
    {
      "rhymes": "-ænaɪn"
    },
    {
      "rhymes": "-aɪn"
    },
    {
      "homophone": "canine"
    }
  ],
  "synonyms": [
    {
      "word": "K-9"
    }
  ],
  "word": "K9"
}