"tray table" meaning in English

{
  "forms": [
    {
      "form": "tray tables",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tray table (plural tray tables)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "tray-table"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2013 December 22, Jad Mouawad, Martha C. White, New York Times, retrieved 2013-12-23:",
          "text": "Air France, for its domestic flights, which never take more than an hour, has installed nonreclining seats where the magazine pocket has been moved above the tray table to provide more space in the critical area around the knees.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of tray-table"
      ],
      "id": "en-tray_table-en-noun-6v4sKW~u",
      "links": [
        [
          "tray-table",
          "tray-table#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "tray table"
}

{
  "forms": [
    {
      "form": "tray tables",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tray table (plural tray tables)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "tray-table"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2013 December 22, Jad Mouawad, Martha C. White, New York Times, retrieved 2013-12-23:",
          "text": "Air France, for its domestic flights, which never take more than an hour, has installed nonreclining seats where the magazine pocket has been moved above the tray table to provide more space in the critical area around the knees.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of tray-table"
      ],
      "links": [
        [
          "tray-table",
          "tray-table#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "tray table"
}