"half-filled" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "half-filled (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"
        }
      ],
      "examples": [
        {
          "ref": "1946 November and December, “Additional London-Dartford Services”, in Railway Magazine, page 386",
          "text": "[…] although overcrowding on the trains running via London Bridge has occasioned considerable discomfort to regular travellers, it was noticed that the alternative route was not extensively patronised, and that the trains were seldom more than half-filled.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Holding or containing only half of its capacity."
      ],
      "id": "en-half-filled-en-adj-xLWkEntM",
      "synonyms": [
        {
          "word": "half full"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "half-filled"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "half-filled (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 with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "1946 November and December, “Additional London-Dartford Services”, in Railway Magazine, page 386",
          "text": "[…] although overcrowding on the trains running via London Bridge has occasioned considerable discomfort to regular travellers, it was noticed that the alternative route was not extensively patronised, and that the trains were seldom more than half-filled.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Holding or containing only half of its capacity."
      ],
      "synonyms": [
        {
          "word": "half full"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "half-filled"
}