"colorizer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "colorize",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "colorize + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "colorize + -er",
  "forms": [
    {
      "form": "colorizers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "colorizer (plural colorizers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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 suffixed with -er (agent noun)",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A device or system which colorizes black and white films."
      ],
      "id": "en-colorizer-en-noun-fChcCKvP",
      "links": [
        [
          "colorize",
          "colorize"
        ]
      ],
      "synonyms": [
        {
          "alt": "U.K.",
          "tags": [
            "rare"
          ],
          "word": "coloriser"
        },
        {
          "alt": "U.K.",
          "word": "colouriser"
        },
        {
          "tags": [
            "Canada"
          ],
          "word": "colourizer"
        }
      ]
    }
  ],
  "word": "colorizer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "colorize",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "colorize + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "colorize + -er",
  "forms": [
    {
      "form": "colorizers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "colorizer (plural colorizers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -er (agent noun)"
      ],
      "glosses": [
        "A device or system which colorizes black and white films."
      ],
      "links": [
        [
          "colorize",
          "colorize"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "alt": "U.K.",
      "tags": [
        "rare"
      ],
      "word": "coloriser"
    },
    {
      "alt": "U.K.",
      "word": "colouriser"
    },
    {
      "tags": [
        "Canada"
      ],
      "word": "colourizer"
    }
  ],
  "word": "colorizer"
}