"lockback" meaning in English

{
  "forms": [
    {
      "form": "lockbacks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lockback (plural lockbacks)",
      "name": "en-noun"
    }
  ],
  "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 links with manual fragments",
          "parents": [
            "Links with manual fragments",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Tools",
          "orig": "en:Tools",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "button lock"
        },
        {
          "word": "frame lock"
        },
        {
          "word": "liner lock"
        },
        {
          "word": "slipjoint"
        }
      ],
      "glosses": [
        "A type of folding knife in which the blade locks in its extended position by means of a lock on the back of the handle that is released by pressing on a portion of the locking arm or lever (that is, the means of release is likewise on the back of the handle)."
      ],
      "hypernyms": [
        {
          "word": "clasp-knife"
        },
        {
          "word": "folding knife"
        },
        {
          "word": "folder"
        }
      ],
      "id": "en-lockback-en-noun-TDGPtFBK",
      "links": [
        [
          "folding knife",
          "folding knife"
        ],
        [
          "blade",
          "blade"
        ],
        [
          "locks",
          "lock#Verb"
        ],
        [
          "back",
          "back#Noun"
        ]
      ],
      "synonyms": [
        {
          "word": "backlock"
        },
        {
          "word": "back lock"
        },
        {
          "word": "lockback knife"
        },
        {
          "word": "backlock knife"
        },
        {
          "word": "lock-back knife"
        },
        {
          "word": "back-lock knife"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "type of folding knife",
          "word": "lockback -veitsi"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "type of folding knife",
          "tags": [
            "masculine"
          ],
          "word": "Backlock"
        }
      ]
    }
  ],
  "word": "lockback"
}

{
  "coordinate_terms": [
    {
      "word": "button lock"
    },
    {
      "word": "frame lock"
    },
    {
      "word": "liner lock"
    },
    {
      "word": "slipjoint"
    }
  ],
  "forms": [
    {
      "form": "lockbacks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lockback (plural lockbacks)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "clasp-knife"
    },
    {
      "word": "folding knife"
    },
    {
      "word": "folder"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English links with manual fragments",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with German translations",
        "en:Tools"
      ],
      "glosses": [
        "A type of folding knife in which the blade locks in its extended position by means of a lock on the back of the handle that is released by pressing on a portion of the locking arm or lever (that is, the means of release is likewise on the back of the handle)."
      ],
      "links": [
        [
          "folding knife",
          "folding knife"
        ],
        [
          "blade",
          "blade"
        ],
        [
          "locks",
          "lock#Verb"
        ],
        [
          "back",
          "back#Noun"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "backlock"
    },
    {
      "word": "back lock"
    },
    {
      "word": "lockback knife"
    },
    {
      "word": "backlock knife"
    },
    {
      "word": "lock-back knife"
    },
    {
      "word": "back-lock knife"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "type of folding knife",
      "word": "lockback -veitsi"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "type of folding knife",
      "tags": [
        "masculine"
      ],
      "word": "Backlock"
    }
  ],
  "word": "lockback"
}