"graff up" meaning in English

{
  "forms": [
    {
      "form": "graffs up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "graffing up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "graffed up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "graffed up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "graff up (third-person singular simple present graffs up, present participle graffing up, simple past and past participle graffed up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs formed with \"up\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              38,
              49
            ]
          ],
          "ref": "2001, Elizabeth Laird, Jake’s Tower, London: Macmillan Children’s Books, published 2017, →ISBN, page 26:",
          "text": "They’d climbed over the wall and were graffing up the back of it.",
          "type": "quote"
        },
        {
          "bold_text_offsets": [
            [
              147,
              158
            ]
          ],
          "ref": "2012 March, Tama Wise, chapter 17, in Street Dreams, Valley Falls, N.Y.: Bold Strokes Books, →ISBN, page 133:",
          "text": "Things were moving too fast, and already he wondered how far he could go without having even touched a can of paint. Briefly, he had images of him graffing up walls.",
          "type": "quote"
        },
        {
          "bold_text_offsets": [
            [
              12,
              22
            ]
          ],
          "ref": "2008, Simmone Howell, “Lucky Smoke”, in Everything Beautiful, New York, N.Y.: Bloomsbury U.S.A. Children’s Books, →ISBN, page 60:",
          "text": "His bag was graffed up with band names I didn’t recognize—lightning bolts and heavy-metal umlauts.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To graffiti."
      ],
      "id": "en-graff_up-en-verb-42ZjAipI",
      "links": [
        [
          "graffiti",
          "graffiti"
        ]
      ],
      "raw_glosses": [
        "(slang) To graffiti."
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "word": "graff up"
}

{
  "forms": [
    {
      "form": "graffs up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "graffing up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "graffed up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "graffed up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "graff up (third-person singular simple present graffs up, present participle graffing up, simple past and past participle graffed up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"up\"",
        "English slang",
        "English terms with quotations",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              38,
              49
            ]
          ],
          "ref": "2001, Elizabeth Laird, Jake’s Tower, London: Macmillan Children’s Books, published 2017, →ISBN, page 26:",
          "text": "They’d climbed over the wall and were graffing up the back of it.",
          "type": "quote"
        },
        {
          "bold_text_offsets": [
            [
              147,
              158
            ]
          ],
          "ref": "2012 March, Tama Wise, chapter 17, in Street Dreams, Valley Falls, N.Y.: Bold Strokes Books, →ISBN, page 133:",
          "text": "Things were moving too fast, and already he wondered how far he could go without having even touched a can of paint. Briefly, he had images of him graffing up walls.",
          "type": "quote"
        },
        {
          "bold_text_offsets": [
            [
              12,
              22
            ]
          ],
          "ref": "2008, Simmone Howell, “Lucky Smoke”, in Everything Beautiful, New York, N.Y.: Bloomsbury U.S.A. Children’s Books, →ISBN, page 60:",
          "text": "His bag was graffed up with band names I didn’t recognize—lightning bolts and heavy-metal umlauts.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To graffiti."
      ],
      "links": [
        [
          "graffiti",
          "graffiti"
        ]
      ],
      "raw_glosses": [
        "(slang) To graffiti."
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "word": "graff up"
}