"petty knife" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "petty",
        "3": "knife"
      },
      "expansion": "petty + knife",
      "name": "compound"
    },
    {
      "args": {
        "1": "derived terms",
        "2": "Derived"
      },
      "expansion": "Derived",
      "name": "glossary"
    },
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "ペティナイフ",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Japanese ペティナイフ",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "ペティナイフ"
      },
      "expansion": "Derived from Japanese ペティナイフ",
      "name": "der+"
    },
    {
      "args": {
        "1": "en"
      },
      "expansion": "Unknown",
      "name": "unknown"
    },
    {
      "args": {
        "1": "en",
        "2": "fr",
        "3": "petit"
      },
      "expansion": "French petit",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "en",
        "3": "knife"
      },
      "expansion": "English knife",
      "name": "der"
    },
    {
      "args": {
        "1": "ja",
        "2": "ペティ",
        "3": "ナイフ",
        "nocat": "1",
        "pos1": "Unknown, perhaps from French <i class=\"Latn mention\" lang=\"fr\">petit</i>",
        "pos2": "from English <i class=\"Latn mention\" lang=\"en\">knife</i>"
      },
      "expansion": "ペティ (Unknown, perhaps from French petit) + ナイフ (from English knife)",
      "name": "compound"
    }
  ],
  "etymology_text": "petty + knife, Derived from Japanese ペティナイフ, a compound of ペティ (Unknown, perhaps from French petit) + ナイフ (from English knife)",
  "forms": [
    {
      "form": "petty knives",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "petty knives"
      },
      "expansion": "petty knife (plural petty knives)",
      "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 terms borrowed back into English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Knives",
          "orig": "en:Knives",
          "parents": [
            "Tools",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A Japanese paring knife."
      ],
      "id": "en-petty_knife-en-noun-R8XT270I",
      "links": [
        [
          "paring",
          "paring"
        ]
      ]
    }
  ],
  "word": "petty knife"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "petty",
        "3": "knife"
      },
      "expansion": "petty + knife",
      "name": "compound"
    },
    {
      "args": {
        "1": "derived terms",
        "2": "Derived"
      },
      "expansion": "Derived",
      "name": "glossary"
    },
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "ペティナイフ",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Japanese ペティナイフ",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "ペティナイフ"
      },
      "expansion": "Derived from Japanese ペティナイフ",
      "name": "der+"
    },
    {
      "args": {
        "1": "en"
      },
      "expansion": "Unknown",
      "name": "unknown"
    },
    {
      "args": {
        "1": "en",
        "2": "fr",
        "3": "petit"
      },
      "expansion": "French petit",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "en",
        "3": "knife"
      },
      "expansion": "English knife",
      "name": "der"
    },
    {
      "args": {
        "1": "ja",
        "2": "ペティ",
        "3": "ナイフ",
        "nocat": "1",
        "pos1": "Unknown, perhaps from French <i class=\"Latn mention\" lang=\"fr\">petit</i>",
        "pos2": "from English <i class=\"Latn mention\" lang=\"en\">knife</i>"
      },
      "expansion": "ペティ (Unknown, perhaps from French petit) + ナイフ (from English knife)",
      "name": "compound"
    }
  ],
  "etymology_text": "petty + knife, Derived from Japanese ペティナイフ, a compound of ペティ (Unknown, perhaps from French petit) + ナイフ (from English knife)",
  "forms": [
    {
      "form": "petty knives",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "petty knives"
      },
      "expansion": "petty knife (plural petty knives)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
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        "English multiword terms",
        "English nouns",
        "English terms borrowed back into English",
        "English terms derived from French",
        "English terms derived from Japanese",
        "English terms with unknown etymologies",
        "en:Knives"
      ],
      "glosses": [
        "A Japanese paring knife."
      ],
      "links": [
        [
          "paring",
          "paring"
        ]
      ]
    }
  ],
  "word": "petty knife"
}