"black up" meaning in English

{
  "forms": [
    {
      "form": "blacks up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "blacking up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "blacked up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "blacked up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "black up (third-person singular simple present blacks up, present participle blacking up, simple past and past participle blacked up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [],
      "glosses": [
        "To become or make (something) black or darker."
      ],
      "id": "en-black_up-en-verb-rbU57BkA",
      "raw_glosses": [
        "(transitive, intransitive, literally) To become or make (something) black or darker."
      ],
      "tags": [
        "intransitive",
        "literally",
        "transitive"
      ]
    },
    {
      "categories": [],
      "glosses": [
        "To put on or wear blackface makeup."
      ],
      "id": "en-black_up-en-verb-xHRtG7eT",
      "links": [
        [
          "blackface",
          "blackface"
        ],
        [
          "makeup",
          "makeup"
        ]
      ],
      "raw_glosses": [
        "(transitive, intransitive) To put on or wear blackface makeup."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ]
    },
    {
      "categories": [
        {
          "_dis": "23 8 69",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "22 16 62",
          "kind": "other",
          "name": "English phrasal verbs formed with \"up\"",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To make something (e.g. a film, cast, story line, etc.) more racially black in character; blackenize."
      ],
      "id": "en-black_up-en-verb-h1IKTzIZ",
      "links": [
        [
          "blackenize",
          "blackenize"
        ]
      ],
      "raw_glosses": [
        "(transitive) To make something (e.g. a film, cast, story line, etc.) more racially black in character; blackenize."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "black up"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs formed with \"up\"",
    "English verbs"
  ],
  "forms": [
    {
      "form": "blacks up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "blacking up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "blacked up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "blacked up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "black up (third-person singular simple present blacks up, present participle blacking up, simple past and past participle blacked up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English intransitive verbs",
        "English transitive verbs"
      ],
      "glosses": [
        "To become or make (something) black or darker."
      ],
      "raw_glosses": [
        "(transitive, intransitive, literally) To become or make (something) black or darker."
      ],
      "tags": [
        "intransitive",
        "literally",
        "transitive"
      ]
    },
    {
      "categories": [
        "English intransitive verbs",
        "English transitive verbs"
      ],
      "glosses": [
        "To put on or wear blackface makeup."
      ],
      "links": [
        [
          "blackface",
          "blackface"
        ],
        [
          "makeup",
          "makeup"
        ]
      ],
      "raw_glosses": [
        "(transitive, intransitive) To put on or wear blackface makeup."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ]
    },
    {
      "categories": [
        "English transitive verbs"
      ],
      "glosses": [
        "To make something (e.g. a film, cast, story line, etc.) more racially black in character; blackenize."
      ],
      "links": [
        [
          "blackenize",
          "blackenize"
        ]
      ],
      "raw_glosses": [
        "(transitive) To make something (e.g. a film, cast, story line, etc.) more racially black in character; blackenize."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "black up"
}