"hack cab" meaning in English

{
  "forms": [
    {
      "form": "hack cabs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hack cab (plural hack cabs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "hackney cab"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Carriages",
          "orig": "en:Carriages",
          "parents": [
            "Vehicles",
            "Machines",
            "Transport",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Vehicles",
          "orig": "en:Vehicles",
          "parents": [
            "Machines",
            "Transport",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Clipping of hackney cab."
      ],
      "id": "en-hack_cab-en-noun-HXQD0P-a",
      "links": [
        [
          "hackney cab",
          "hackney cab#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "clipping"
      ]
    }
  ],
  "word": "hack cab"
}

{
  "forms": [
    {
      "form": "hack cabs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hack cab (plural hack cabs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "hackney cab"
        }
      ],
      "categories": [
        "English clippings",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Carriages",
        "en:Vehicles"
      ],
      "glosses": [
        "Clipping of hackney cab."
      ],
      "links": [
        [
          "hackney cab",
          "hackney cab#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "clipping"
      ]
    }
  ],
  "word": "hack cab"
}