"hevva" meaning in English

{
  "etymology_text": "From the Cornish hevva, a contracted form of the Old Cornish hedva, from Welsh hedfa (meaning swarming, flocking), from Welsh haid, a swarm.",
  "head_templates": [
    {
      "args": {},
      "expansion": "hevva",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cornish English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "hevva cake"
        }
      ],
      "glosses": [
        "Cry raised when a shoal of pilchards is sighted, signalling for fisherman to man their boats."
      ],
      "id": "en-hevva-en-intj-94j5kV4e",
      "links": [
        [
          "shoal",
          "shoal"
        ],
        [
          "pilchard",
          "pilchard"
        ]
      ],
      "raw_glosses": [
        "(Cornwall) Cry raised when a shoal of pilchards is sighted, signalling for fisherman to man their boats."
      ],
      "tags": [
        "Cornwall"
      ]
    }
  ],
  "word": "hevva"
}

{
  "derived": [
    {
      "word": "hevva cake"
    }
  ],
  "etymology_text": "From the Cornish hevva, a contracted form of the Old Cornish hedva, from Welsh hedfa (meaning swarming, flocking), from Welsh haid, a swarm.",
  "head_templates": [
    {
      "args": {},
      "expansion": "hevva",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Cornish English",
        "English entries with incorrect language header",
        "English interjections",
        "English lemmas"
      ],
      "glosses": [
        "Cry raised when a shoal of pilchards is sighted, signalling for fisherman to man their boats."
      ],
      "links": [
        [
          "shoal",
          "shoal"
        ],
        [
          "pilchard",
          "pilchard"
        ]
      ],
      "raw_glosses": [
        "(Cornwall) Cry raised when a shoal of pilchards is sighted, signalling for fisherman to man their boats."
      ],
      "tags": [
        "Cornwall"
      ]
    }
  ],
  "word": "hevva"
}