"hættumerki" meaning in Islandais

{
  "categories": [
    {
      "kind": "other",
      "name": "Genres manquants en islandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en islandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Islandais",
      "orig": "islandais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Islandais",
  "lang_code": "is",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "genre à préciser : {{m}}, {{f}}, {{mf}}, {{n}} ?"
  ],
  "senses": [
    {
      "glosses": [
        "Sirène, timbre, timbre avertisseur."
      ],
      "id": "fr-hættumerki-is-noun-HxhJaHs-"
    },
    {
      "glosses": [
        "Sirène (femme séductrice)."
      ],
      "id": "fr-hættumerki-is-noun-dXObZlty"
    }
  ],
  "sounds": [
    {
      "ipa": "\\haj.tʰʏ.mɛr.kɪ\\"
    }
  ],
  "word": "hættumerki"
}

{
  "categories": [
    "Genres manquants en islandais",
    "Noms communs en islandais",
    "islandais"
  ],
  "lang": "Islandais",
  "lang_code": "is",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "genre à préciser : {{m}}, {{f}}, {{mf}}, {{n}} ?"
  ],
  "senses": [
    {
      "glosses": [
        "Sirène, timbre, timbre avertisseur."
      ]
    },
    {
      "glosses": [
        "Sirène (femme séductrice)."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\haj.tʰʏ.mɛr.kɪ\\"
    }
  ],
  "word": "hættumerki"
}