"nihil est" meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "it is nothing"
      },
      "expansion": "“it is nothing”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "it is nothing"
      },
      "expansion": "Literally, “it is nothing”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “it is nothing”.",
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "phrase"
      },
      "expansion": "nihil est",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin 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"
        }
      ],
      "glosses": [
        "don't mention it (ritual reply to \"Thank you\")"
      ],
      "id": "en-nihil_est-la-phrase-jHIceXeF",
      "links": [
        [
          "don't mention it",
          "don't mention it"
        ]
      ]
    }
  ],
  "word": "nihil est"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it is nothing"
      },
      "expansion": "“it is nothing”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "it is nothing"
      },
      "expansion": "Literally, “it is nothing”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “it is nothing”.",
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "phrase"
      },
      "expansion": "nihil est",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Latin entries with incorrect language header",
        "Latin lemmas",
        "Latin multiword terms",
        "Latin phrases",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "don't mention it (ritual reply to \"Thank you\")"
      ],
      "links": [
        [
          "don't mention it",
          "don't mention it"
        ]
      ]
    }
  ],
  "word": "nihil est"
}