"slick down" meaning in English

{
  "forms": [
    {
      "form": "slicks down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "slicking down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "slicked down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "slicked down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "slick down (third-person singular simple present slicks down, present participle slicking down, simple past and past participle slicked down)",
      "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (down)",
          "parents": [],
          "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": "Hair",
          "orig": "en:Hair",
          "parents": [
            "Body parts",
            "Body",
            "Anatomy",
            "Human",
            "Biology",
            "Medicine",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1967, Barbara Sleigh, Jessamy, Sevenoaks, Kent: Bloomsbury, published 1993, page 96",
          "text": "His unruly hair was slicked down with water, and as Jessamy introduced him to Miss Brindle his face assumed a cherubic innocence which would immediately have aroused the suspicions of anyone who knew him.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To make hair flat by putting oil, water, etc. on it."
      ],
      "id": "en-slick_down-en-verb-UbRbNsTn",
      "links": [
        [
          "hair",
          "hair#English"
        ],
        [
          "flat",
          "flat#English"
        ],
        [
          "oil",
          "oil#English"
        ],
        [
          "water",
          "water#English"
        ]
      ],
      "related": [
        {
          "word": "slick back"
        }
      ]
    }
  ],
  "word": "slick down"
}

{
  "forms": [
    {
      "form": "slicks down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "slicking down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "slicked down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "slicked down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "slick down (third-person singular simple present slicks down, present participle slicking down, simple past and past participle slicked down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "slick back"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (down)",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English verbs",
        "en:Hair"
      ],
      "examples": [
        {
          "ref": "1967, Barbara Sleigh, Jessamy, Sevenoaks, Kent: Bloomsbury, published 1993, page 96",
          "text": "His unruly hair was slicked down with water, and as Jessamy introduced him to Miss Brindle his face assumed a cherubic innocence which would immediately have aroused the suspicions of anyone who knew him.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To make hair flat by putting oil, water, etc. on it."
      ],
      "links": [
        [
          "hair",
          "hair#English"
        ],
        [
          "flat",
          "flat#English"
        ],
        [
          "oil",
          "oil#English"
        ],
        [
          "water",
          "water#English"
        ]
      ]
    }
  ],
  "word": "slick down"
}