"erv" meaning in Breton

{
  "etymology_templates": [
    {
      "args": {
        "1": "br",
        "2": "cel-pro",
        "3": "*arwī"
      },
      "expansion": "Proto-Celtic *arwī",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "erw"
      },
      "expansion": "Welsh erw",
      "name": "cog"
    },
    {
      "args": {
        "1": "kw",
        "2": "erow"
      },
      "expansion": "Cornish erow",
      "name": "cog"
    },
    {
      "args": {
        "1": "br",
        "2": "ine-pro",
        "3": "*h₂erh₃wos",
        "4": "",
        "5": "arable"
      },
      "expansion": "Proto-Indo-European *h₂erh₃wos (“arable”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "sga",
        "2": "arbar"
      },
      "expansion": "Old Irish arbar",
      "name": "cog"
    },
    {
      "args": {
        "1": "la",
        "2": "arvus"
      },
      "expansion": "Latin arvus",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Celtic *arwī (compare Welsh erw, Cornish erow), from Proto-Indo-European *h₂erh₃wos (“arable”) (compare Old Irish arbar, Latin arvus).",
  "forms": [
    {
      "form": "ervioù",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "irvi",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "noun",
        "3": "plural",
        "4": "ervioù",
        "5": "or",
        "6": "irvi",
        "g": "m",
        "g2": "f"
      },
      "expansion": "erv m or f (plural ervioù or irvi)",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Breton entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "ridge between furrows"
      ],
      "id": "en-erv-br-noun-qlBCB4Eg",
      "links": [
        [
          "ridge",
          "ridge"
        ],
        [
          "furrow",
          "furrow"
        ]
      ],
      "tags": [
        "feminine",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈɛrw]"
    },
    {
      "ipa": "[ˈɛːro]"
    }
  ],
  "word": "erv"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "br",
        "2": "cel-pro",
        "3": "*arwī"
      },
      "expansion": "Proto-Celtic *arwī",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "erw"
      },
      "expansion": "Welsh erw",
      "name": "cog"
    },
    {
      "args": {
        "1": "kw",
        "2": "erow"
      },
      "expansion": "Cornish erow",
      "name": "cog"
    },
    {
      "args": {
        "1": "br",
        "2": "ine-pro",
        "3": "*h₂erh₃wos",
        "4": "",
        "5": "arable"
      },
      "expansion": "Proto-Indo-European *h₂erh₃wos (“arable”)",
      "name": "inh"
    },
    {
      "args": {
        "1": "sga",
        "2": "arbar"
      },
      "expansion": "Old Irish arbar",
      "name": "cog"
    },
    {
      "args": {
        "1": "la",
        "2": "arvus"
      },
      "expansion": "Latin arvus",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Celtic *arwī (compare Welsh erw, Cornish erow), from Proto-Indo-European *h₂erh₃wos (“arable”) (compare Old Irish arbar, Latin arvus).",
  "forms": [
    {
      "form": "ervioù",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "irvi",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "noun",
        "3": "plural",
        "4": "ervioù",
        "5": "or",
        "6": "irvi",
        "g": "m",
        "g2": "f"
      },
      "expansion": "erv m or f (plural ervioù or irvi)",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Breton entries with incorrect language header",
        "Breton feminine nouns",
        "Breton lemmas",
        "Breton masculine nouns",
        "Breton nouns",
        "Breton nouns with multiple genders",
        "Breton terms derived from Proto-Celtic",
        "Breton terms derived from Proto-Indo-European",
        "Breton terms inherited from Proto-Celtic",
        "Breton terms inherited from Proto-Indo-European",
        "Breton terms with IPA pronunciation"
      ],
      "glosses": [
        "ridge between furrows"
      ],
      "links": [
        [
          "ridge",
          "ridge"
        ],
        [
          "furrow",
          "furrow"
        ]
      ],
      "tags": [
        "feminine",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈɛrw]"
    },
    {
      "ipa": "[ˈɛːro]"
    }
  ],
  "word": "erv"
}