"seat sale" meaning in English

{
  "forms": [
    {
      "form": "seat sales",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seat sale (plural seat sales)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A sale of reduced-price airline tickets."
      ],
      "id": "en-seat_sale-en-noun-tXA2PHmr",
      "raw_glosses": [
        "(Canada, British) A sale of reduced-price airline tickets."
      ],
      "tags": [
        "British",
        "Canada"
      ]
    }
  ],
  "word": "seat sale"
}

{
  "forms": [
    {
      "form": "seat sales",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seat sale (plural seat sales)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "Canadian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "A sale of reduced-price airline tickets."
      ],
      "raw_glosses": [
        "(Canada, British) A sale of reduced-price airline tickets."
      ],
      "tags": [
        "British",
        "Canada"
      ]
    }
  ],
  "word": "seat sale"
}