"sniffer" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Dérivations en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en anglais suffixés avec -er",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Dérivé de sniff, avec le suffixe -er."
  ],
  "forms": [
    {
      "form": "sniffers",
      "ipas": [
        "\\snɪ.fəɹz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Sniffeur (par le nez)."
      ],
      "id": "fr-sniffer-en-noun-KgXh8PKq"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais des réseaux informatiques",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Sniffeur."
      ],
      "id": "fr-sniffer-en-noun-HtaVEcXK",
      "raw_tags": [
        "Réseaux informatiques"
      ]
    }
  ],
  "word": "sniffer"
}

{
  "categories": [
    "Dérivations en anglais",
    "Lemmes en anglais",
    "Mots en anglais suffixés avec -er",
    "Noms communs en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Dérivé de sniff, avec le suffixe -er."
  ],
  "forms": [
    {
      "form": "sniffers",
      "ipas": [
        "\\snɪ.fəɹz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Sniffeur (par le nez)."
      ]
    },
    {
      "categories": [
        "Lexique en anglais des réseaux informatiques"
      ],
      "glosses": [
        "Sniffeur."
      ],
      "raw_tags": [
        "Réseaux informatiques"
      ]
    }
  ],
  "word": "sniffer"
}