"drain cock" meaning in English

{
  "forms": [
    {
      "form": "drain cocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "drain cock (plural drain cocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "draincock"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1943 September and October, “The Why and the Wherefore: Cylinder Drain Cocks”, in Railway Magazine, page 319",
          "text": "The opening of cylinder drain cocks is generally arranged to take place simultaneously on all cylinders by operating a single control in the cab, and the effect should be four horizontal emissions of steam at the leading end of the engine with every revolution of the driving wheels of a 2-cylinder engine, six with a 3-cylinder simple, and so on. If in certain cases you have noted an emission at every fourth exhaust beat only, there seems little doubt you have mistaken for a drain cock effect the effect of a loose gland.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of draincock."
      ],
      "id": "en-drain_cock-en-noun-bcEwd1Wo",
      "links": [
        [
          "draincock",
          "draincock#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "drain cock"
}

{
  "forms": [
    {
      "form": "drain cocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "drain cock (plural drain cocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "draincock"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1943 September and October, “The Why and the Wherefore: Cylinder Drain Cocks”, in Railway Magazine, page 319",
          "text": "The opening of cylinder drain cocks is generally arranged to take place simultaneously on all cylinders by operating a single control in the cab, and the effect should be four horizontal emissions of steam at the leading end of the engine with every revolution of the driving wheels of a 2-cylinder engine, six with a 3-cylinder simple, and so on. If in certain cases you have noted an emission at every fourth exhaust beat only, there seems little doubt you have mistaken for a drain cock effect the effect of a loose gland.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of draincock."
      ],
      "links": [
        [
          "draincock",
          "draincock#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "drain cock"
}