"class up" meaning in English

{
  "forms": [
    {
      "form": "classes up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "classing up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "classed up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "classed up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "class up (third-person singular simple present classes up, present participle classing up, simple past and past participle classed up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "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 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": [
        {
          "text": "to class up the joint",
          "type": "example"
        },
        {
          "ref": "2015, C.A. Portnellus, The Road Home: Book Three of Sparrow Wars in the Garden of Bliss:",
          "text": "A good looking moose working in their café probably was not her father's idea of classing up the place.",
          "type": "quote"
        },
        {
          "ref": "2018, Kathy Lyons, Sliding Home:",
          "text": "It [a simple black sheath] was formal, could be classed up with my simple gold hoop earrings, and the neckline barely plunged at all.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To make more classy or sophisticated"
      ],
      "id": "en-class_up-en-verb-x1T0LKwu",
      "links": [
        [
          "classy",
          "classy"
        ],
        [
          "sophisticated",
          "sophisticated"
        ]
      ],
      "raw_glosses": [
        "(transitive, informal) To make more classy or sophisticated"
      ],
      "tags": [
        "informal",
        "transitive"
      ]
    }
  ],
  "word": "class up"
}

{
  "forms": [
    {
      "form": "classes up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "classing up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "classed up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "classed up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "class up (third-person singular simple present classes up, present participle classing up, simple past and past participle classed up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"up\"",
        "English terms with quotations",
        "English terms with usage examples",
        "English transitive verbs",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "text": "to class up the joint",
          "type": "example"
        },
        {
          "ref": "2015, C.A. Portnellus, The Road Home: Book Three of Sparrow Wars in the Garden of Bliss:",
          "text": "A good looking moose working in their café probably was not her father's idea of classing up the place.",
          "type": "quote"
        },
        {
          "ref": "2018, Kathy Lyons, Sliding Home:",
          "text": "It [a simple black sheath] was formal, could be classed up with my simple gold hoop earrings, and the neckline barely plunged at all.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To make more classy or sophisticated"
      ],
      "links": [
        [
          "classy",
          "classy"
        ],
        [
          "sophisticated",
          "sophisticated"
        ]
      ],
      "raw_glosses": [
        "(transitive, informal) To make more classy or sophisticated"
      ],
      "tags": [
        "informal",
        "transitive"
      ]
    }
  ],
  "word": "class up"
}