"flat tire" meaning in English

{
  "forms": [
    {
      "form": "flat tires",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flat tire (plural flat tires)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "flat tyre"
        }
      ],
      "categories": [
        {
          "_dis": "51 49",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "_dis1": "90 10",
          "word": "flat tire rule"
        }
      ],
      "glosses": [
        "Alternative spelling of flat tyre"
      ],
      "id": "en-flat_tire-en-noun-gRV8cm7w",
      "links": [
        [
          "flat tyre",
          "flat tyre#English"
        ]
      ],
      "raw_glosses": [
        "(chiefly American spelling) Alternative spelling of flat tyre"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "51 49",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "2020, Nancy Shew Bolton, Love Stumbled In",
          "text": "Sam scowled at him. “You're always such a flat tire. Live a little for once.”\nA twinge of pity for Judd made Carrie speak. “He's not a flat tire. He just doesn't want to.”",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A bore; a person who is no fun."
      ],
      "id": "en-flat_tire-en-noun-vE2XUcYG",
      "links": [
        [
          "bore",
          "bore"
        ],
        [
          "no fun",
          "no fun"
        ]
      ],
      "raw_glosses": [
        "(US, slang, dated) A bore; a person who is no fun."
      ],
      "synonyms": [
        {
          "word": "pill"
        },
        {
          "word": "square"
        },
        {
          "word": "wet blanket"
        }
      ],
      "tags": [
        "US",
        "dated",
        "slang"
      ]
    }
  ],
  "word": "flat tire"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "derived": [
    {
      "word": "flat tire rule"
    }
  ],
  "forms": [
    {
      "form": "flat tires",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flat tire (plural flat tires)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "flat tyre"
        }
      ],
      "categories": [
        "American English forms"
      ],
      "glosses": [
        "Alternative spelling of flat tyre"
      ],
      "links": [
        [
          "flat tyre",
          "flat tyre#English"
        ]
      ],
      "raw_glosses": [
        "(chiefly American spelling) Alternative spelling of flat tyre"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative"
      ]
    },
    {
      "categories": [
        "American English",
        "English dated terms",
        "English slang",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2020, Nancy Shew Bolton, Love Stumbled In",
          "text": "Sam scowled at him. “You're always such a flat tire. Live a little for once.”\nA twinge of pity for Judd made Carrie speak. “He's not a flat tire. He just doesn't want to.”",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A bore; a person who is no fun."
      ],
      "links": [
        [
          "bore",
          "bore"
        ],
        [
          "no fun",
          "no fun"
        ]
      ],
      "raw_glosses": [
        "(US, slang, dated) A bore; a person who is no fun."
      ],
      "synonyms": [
        {
          "word": "pill"
        },
        {
          "word": "square"
        },
        {
          "word": "wet blanket"
        }
      ],
      "tags": [
        "US",
        "dated",
        "slang"
      ]
    }
  ],
  "word": "flat tire"
}