"bump supper" meaning in English

{
  "forms": [
    {
      "form": "bump suppers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bump supper (plural bump suppers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1978, Lawrence Durrell, Livia (Avignon Quintet), Faber & Faber, published 1992, page 442",
          "text": "‘I once got clap after a bump supper,’ said Blanford gloomily, ‘and it wasn't gay at all. It took ages to get itself cured.’",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A supper given in celebration of the making of a ‘bump’ by a college boat."
      ],
      "id": "en-bump_supper-en-noun-Epnj6b2v",
      "links": [
        [
          "supper",
          "supper"
        ],
        [
          "bump",
          "bump"
        ]
      ],
      "raw_glosses": [
        "(UK) A supper given in celebration of the making of a ‘bump’ by a college boat."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "bump supper"
}

{
  "forms": [
    {
      "form": "bump suppers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bump supper (plural bump suppers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1978, Lawrence Durrell, Livia (Avignon Quintet), Faber & Faber, published 1992, page 442",
          "text": "‘I once got clap after a bump supper,’ said Blanford gloomily, ‘and it wasn't gay at all. It took ages to get itself cured.’",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A supper given in celebration of the making of a ‘bump’ by a college boat."
      ],
      "links": [
        [
          "supper",
          "supper"
        ],
        [
          "bump",
          "bump"
        ]
      ],
      "raw_glosses": [
        "(UK) A supper given in celebration of the making of a ‘bump’ by a college boat."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "bump supper"
}