"ninja" meaning in Spanish

{
  "forms": [
    {
      "form": "ninjas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mfbysense"
      },
      "expansion": "ninja m or f by sense (plural ninjas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish masculine and feminine nouns by sense",
          "parents": [
            "Masculine and feminine nouns by sense",
            "Nouns by gender",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish nouns with irregular gender",
          "parents": [
            "Nouns with irregular gender",
            "Irregular nouns",
            "Nouns by inflection type",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Martial arts",
          "orig": "es:Martial arts",
          "parents": [
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "ninja (person trained in stealth, espionage, assassination and ninjutsu)"
      ],
      "id": "en-ninja-es-noun-sVNqhjrq",
      "links": [
        [
          "martial arts",
          "martial arts"
        ],
        [
          "ninja",
          "ninja#English"
        ]
      ],
      "raw_glosses": [
        "(martial arts, historical) ninja (person trained in stealth, espionage, assassination and ninjutsu)"
      ],
      "synonyms": [
        {
          "word": "ninya"
        }
      ],
      "tags": [
        "by-personal-gender",
        "feminine",
        "historical",
        "masculine"
      ],
      "topics": [
        "government",
        "hobbies",
        "lifestyle",
        "martial-arts",
        "military",
        "politics",
        "sports",
        "war"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈninʝa/"
    },
    {
      "ipa": "[ˈnĩɲ.ɟ͡ʝa]"
    },
    {
      "ipa": "/ˈninʝa/",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "[ˈnĩɲ.ɟ͡ʝa]",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "/ˈninʃa/",
      "note": "Buenos Aires and environs"
    },
    {
      "ipa": "[ˈnĩnʲ.ʃa]",
      "note": "Buenos Aires and environs"
    },
    {
      "ipa": "/ˈninʒa/",
      "note": "elsewhere in Argentina and Uruguay"
    },
    {
      "ipa": "[ˈnĩnʲ.ʒa]",
      "note": "elsewhere in Argentina and Uruguay"
    },
    {
      "rhymes": "-inʝa"
    }
  ],
  "word": "ninja"
}

{
  "forms": [
    {
      "form": "ninjas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mfbysense"
      },
      "expansion": "ninja m or f by sense (plural ninjas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Rhymes:Spanish/inʝa",
        "Rhymes:Spanish/inʝa/2 syllables",
        "Spanish 2-syllable words",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish masculine and feminine nouns by sense",
        "Spanish masculine nouns",
        "Spanish nouns",
        "Spanish nouns with irregular gender",
        "Spanish nouns with multiple genders",
        "Spanish terms with IPA pronunciation",
        "Spanish terms with historical senses",
        "es:Martial arts"
      ],
      "glosses": [
        "ninja (person trained in stealth, espionage, assassination and ninjutsu)"
      ],
      "links": [
        [
          "martial arts",
          "martial arts"
        ],
        [
          "ninja",
          "ninja#English"
        ]
      ],
      "raw_glosses": [
        "(martial arts, historical) ninja (person trained in stealth, espionage, assassination and ninjutsu)"
      ],
      "tags": [
        "by-personal-gender",
        "feminine",
        "historical",
        "masculine"
      ],
      "topics": [
        "government",
        "hobbies",
        "lifestyle",
        "martial-arts",
        "military",
        "politics",
        "sports",
        "war"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈninʝa/"
    },
    {
      "ipa": "[ˈnĩɲ.ɟ͡ʝa]"
    },
    {
      "ipa": "/ˈninʝa/",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "[ˈnĩɲ.ɟ͡ʝa]",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "/ˈninʃa/",
      "note": "Buenos Aires and environs"
    },
    {
      "ipa": "[ˈnĩnʲ.ʃa]",
      "note": "Buenos Aires and environs"
    },
    {
      "ipa": "/ˈninʒa/",
      "note": "elsewhere in Argentina and Uruguay"
    },
    {
      "ipa": "[ˈnĩnʲ.ʒa]",
      "note": "elsewhere in Argentina and Uruguay"
    },
    {
      "rhymes": "-inʝa"
    }
  ],
  "synonyms": [
    {
      "word": "ninya"
    }
  ],
  "word": "ninja"
}