"color bar" meaning in English

{
  "forms": [
    {
      "form": "color bars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "color bar (plural color bars)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "colour bar"
        }
      ],
      "categories": [
        {
          "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 topic categories using raw markup",
          "parents": [
            "Entries with topic 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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Printing",
          "orig": "en:Printing",
          "parents": [
            "Industries",
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative spelling of colour bar"
      ],
      "id": "en-color_bar-en-noun-3SeCnAJJ",
      "links": [
        [
          "colour bar",
          "colour bar#English"
        ]
      ],
      "raw_glosses": [
        "(American spelling) Alternative spelling of colour bar"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "color bar"
}

{
  "forms": [
    {
      "form": "color bars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "color bar (plural color bars)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "colour bar"
        }
      ],
      "categories": [
        "American English forms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Printing"
      ],
      "glosses": [
        "Alternative spelling of colour bar"
      ],
      "links": [
        [
          "colour bar",
          "colour bar#English"
        ]
      ],
      "raw_glosses": [
        "(American spelling) Alternative spelling of colour bar"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "color bar"
}