"sand-martin" meaning in English

{
  "forms": [
    {
      "form": "sand-martins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sand-martin (plural sand-martins)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "parents": [
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Swallows",
          "orig": "en:Swallows",
          "parents": [
            "Perching birds",
            "Birds",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1922, Virginia Woolf, Jacob's Room, Vintage Classics, paperback edition, page 172",
          "text": "But the red light was on the columns of the Parthenon, and the Greek women who were knitting their stockings and sometimes crying to a child to come and have the insects picked from its head were as jolly as sand-martins in the heat, quarrelling, scolding, suckling their babies, until the ships in the Piraeus fired their guns."
        }
      ],
      "glosses": [
        "a migratory passerine bird in the swallow family."
      ],
      "id": "en-sand-martin-en-noun-HLBwNgEv",
      "links": [
        [
          "migratory",
          "migratory"
        ],
        [
          "passerine",
          "passerine"
        ],
        [
          "bird",
          "bird"
        ],
        [
          "swallow",
          "swallow"
        ]
      ],
      "wikipedia": [
        "sand martin"
      ]
    }
  ],
  "word": "sand-martin"
}

{
  "forms": [
    {
      "form": "sand-martins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sand-martin (plural sand-martins)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
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        "en:Swallows"
      ],
      "examples": [
        {
          "ref": "1922, Virginia Woolf, Jacob's Room, Vintage Classics, paperback edition, page 172",
          "text": "But the red light was on the columns of the Parthenon, and the Greek women who were knitting their stockings and sometimes crying to a child to come and have the insects picked from its head were as jolly as sand-martins in the heat, quarrelling, scolding, suckling their babies, until the ships in the Piraeus fired their guns."
        }
      ],
      "glosses": [
        "a migratory passerine bird in the swallow family."
      ],
      "links": [
        [
          "migratory",
          "migratory"
        ],
        [
          "passerine",
          "passerine"
        ],
        [
          "bird",
          "bird"
        ],
        [
          "swallow",
          "swallow"
        ]
      ],
      "wikipedia": [
        "sand martin"
      ]
    }
  ],
  "word": "sand-martin"
}