"thick and fast" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "thick and fast (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English coordinated pairs",
          "parents": [
            "Coordinated pairs",
            "Terms by etymology"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1941 February, O. S. Nock, “The Locomotives of Sir Nigel Gresley: Part 1—G.N.R. 1911-1914”, in Railway Magazine, page 77",
          "text": "It links the time when single-wheelers were still being used on crack expresses to our modern streamline age, when up to the outbreak of war developments both at home and overseas were following thick and fast upon each other.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Occurring in large numbers and rapidly."
      ],
      "id": "en-thick_and_fast-en-adv-3rPOD6MZ",
      "links": [
        [
          "rapidly",
          "rapidly"
        ]
      ],
      "related": [
        {
          "word": "few and far between"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "thick and fast"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "thick and fast (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "related": [
    {
      "word": "few and far between"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English coordinated pairs",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English uncomparable adverbs"
      ],
      "examples": [
        {
          "ref": "1941 February, O. S. Nock, “The Locomotives of Sir Nigel Gresley: Part 1—G.N.R. 1911-1914”, in Railway Magazine, page 77",
          "text": "It links the time when single-wheelers were still being used on crack expresses to our modern streamline age, when up to the outbreak of war developments both at home and overseas were following thick and fast upon each other.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Occurring in large numbers and rapidly."
      ],
      "links": [
        [
          "rapidly",
          "rapidly"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "thick and fast"
}