"self-emptying" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "self-",
        "3": "emptying"
      },
      "expansion": "self- + emptying",
      "name": "af"
    }
  ],
  "etymology_text": "From self- + emptying.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "self-emptying (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with self-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1951 March, “British Railways Standard \"Britannia\" Class 4-6-2 Locomotives”, in Railway Magazine, page 185",
          "text": "The ashpan has three hoppers, one between and one on each side of the main frames, and is of the self-emptying type, having bottom flap doors on the hoppers, connected by a shaft with universal joints and operated by a lever at ground level.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "That can empty itself, when required to do so."
      ],
      "id": "en-self-emptying-en-adj-~Q9Tn8~1",
      "links": [
        [
          "empty",
          "empty"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "self-emptying"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "self-",
        "3": "emptying"
      },
      "expansion": "self- + emptying",
      "name": "af"
    }
  ],
  "etymology_text": "From self- + emptying.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "self-emptying (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms prefixed with self-",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "1951 March, “British Railways Standard \"Britannia\" Class 4-6-2 Locomotives”, in Railway Magazine, page 185",
          "text": "The ashpan has three hoppers, one between and one on each side of the main frames, and is of the self-emptying type, having bottom flap doors on the hoppers, connected by a shaft with universal joints and operated by a lever at ground level.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "That can empty itself, when required to do so."
      ],
      "links": [
        [
          "empty",
          "empty"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "self-emptying"
}