"wait up" meaning in English

{
  "forms": [
    {
      "form": "waits up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "waiting up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "waited up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "waited up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "wait up (third-person singular simple present waits up, present participle waiting up, simple past and past participle waited up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "55 45",
          "kind": "topical",
          "langcode": "en",
          "name": "Sleep",
          "orig": "en:Sleep",
          "parents": [
            "Body",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1980, Joe Garner, Never Fly Over an Eagle's Nest, page 66",
          "text": "Anyway, Dad waited up for them. It must have been about midnight when they came in.",
          "type": "quotation"
        },
        {
          "ref": "2005, Kathryn E. Livingston, All About Motherhood, page 55",
          "text": "It is one a.m. on a Sunday morning and I'm waiting up for my teenage son, who was supposed to be home at midnight.",
          "type": "quotation"
        },
        {
          "ref": "2008, Michael Panar, Changes",
          "text": "One night, Lana came home, while her dad waited up for her.",
          "type": "quotation"
        },
        {
          "ref": "2011, Catherine Greenman, Hooked, page 203",
          "text": "Dad waited up at first, but by the end of sophomore year he was always in bed.",
          "type": "quotation"
        },
        {
          "ref": "2011, Susan Calder, Deadly Fall, page 99",
          "text": "My dad waited up for us, pacing all over the place.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To stay awake waiting for somebody to return."
      ],
      "id": "en-wait_up-en-verb-6mt7sBHQ",
      "links": [
        [
          "awake",
          "awake"
        ],
        [
          "return",
          "return"
        ]
      ],
      "translations": [
        {
          "_dis1": "89 11",
          "code": "sv",
          "lang": "Swedish",
          "sense": "stay awake",
          "word": "vänta uppe"
        },
        {
          "_dis1": "89 11",
          "code": "sv",
          "lang": "Swedish",
          "sense": "stay awake",
          "word": "stanna uppe"
        }
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "14 86",
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "24 76",
          "kind": "other",
          "name": "English phrasal verbs with particle (up)",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "11 89",
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "55 45",
          "kind": "topical",
          "langcode": "en",
          "name": "Sleep",
          "orig": "en:Sleep",
          "parents": [
            "Body",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Hey, wait up! I forgot my umbrella."
        },
        {
          "text": "We have to wait up for Steve."
        }
      ],
      "glosses": [
        "To wait."
      ],
      "id": "en-wait_up-en-verb-l-mUta9M",
      "links": [
        [
          "wait",
          "wait"
        ]
      ],
      "raw_glosses": [
        "(colloquial, often used in the imperative, US) To wait."
      ],
      "tags": [
        "US",
        "colloquial",
        "often",
        "used in the imperative"
      ],
      "translations": [
        {
          "_dis1": "9 91",
          "code": "ja",
          "lang": "Japanese",
          "roman": "shōshō",
          "sense": "wait",
          "word": "少々"
        }
      ]
    }
  ],
  "word": "wait up"
}

{
  "categories": [
    "English entries with topic categories using raw markup",
    "English lemmas",
    "English multiword terms",
    "English phrasal verbs",
    "English phrasal verbs with particle (up)",
    "English terms with non-redundant non-automated sortkeys",
    "English verbs",
    "en:Sleep"
  ],
  "forms": [
    {
      "form": "waits up",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "waiting up",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "waited up",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "waited up",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "wait up (third-person singular simple present waits up, present participle waiting up, simple past and past participle waited up)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1980, Joe Garner, Never Fly Over an Eagle's Nest, page 66",
          "text": "Anyway, Dad waited up for them. It must have been about midnight when they came in.",
          "type": "quotation"
        },
        {
          "ref": "2005, Kathryn E. Livingston, All About Motherhood, page 55",
          "text": "It is one a.m. on a Sunday morning and I'm waiting up for my teenage son, who was supposed to be home at midnight.",
          "type": "quotation"
        },
        {
          "ref": "2008, Michael Panar, Changes",
          "text": "One night, Lana came home, while her dad waited up for her.",
          "type": "quotation"
        },
        {
          "ref": "2011, Catherine Greenman, Hooked, page 203",
          "text": "Dad waited up at first, but by the end of sophomore year he was always in bed.",
          "type": "quotation"
        },
        {
          "ref": "2011, Susan Calder, Deadly Fall, page 99",
          "text": "My dad waited up for us, pacing all over the place.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To stay awake waiting for somebody to return."
      ],
      "links": [
        [
          "awake",
          "awake"
        ],
        [
          "return",
          "return"
        ]
      ]
    },
    {
      "categories": [
        "American English",
        "English colloquialisms"
      ],
      "examples": [
        {
          "text": "Hey, wait up! I forgot my umbrella."
        },
        {
          "text": "We have to wait up for Steve."
        }
      ],
      "glosses": [
        "To wait."
      ],
      "links": [
        [
          "wait",
          "wait"
        ]
      ],
      "raw_glosses": [
        "(colloquial, often used in the imperative, US) To wait."
      ],
      "tags": [
        "US",
        "colloquial",
        "often",
        "used in the imperative"
      ]
    }
  ],
  "translations": [
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "stay awake",
      "word": "vänta uppe"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "stay awake",
      "word": "stanna uppe"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "shōshō",
      "sense": "wait",
      "word": "少々"
    }
  ],
  "word": "wait up"
}