"slick back" meaning in English

{
  "forms": [
    {
      "form": "slicks back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "slicking back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "slicked back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "slicked back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "slick back (third-person singular simple present slicks back, present participle slicking back, simple past and past participle slicked back)",
      "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 (back)",
          "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": [
        {
          "text": "His hair was slicked back with gel."
        }
      ],
      "glosses": [
        "To make hair flat by putting oil, water, etc. on it."
      ],
      "id": "en-slick_back-en-verb-UbRbNsTn",
      "links": [
        [
          "hair",
          "hair"
        ],
        [
          "flat",
          "flat"
        ],
        [
          "oil",
          "oil"
        ]
      ],
      "related": [
        {
          "word": "slick down"
        }
      ]
    }
  ],
  "word": "slick back"
}

{
  "forms": [
    {
      "form": "slicks back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "slicking back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "slicked back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "slicked back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "slick back (third-person singular simple present slicks back, present participle slicking back, simple past and past participle slicked back)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "slick down"
    }
  ],
  "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 (back)",
        "English terms with non-redundant non-automated sortkeys",
        "English verbs",
        "en:Hair"
      ],
      "examples": [
        {
          "text": "His hair was slicked back with gel."
        }
      ],
      "glosses": [
        "To make hair flat by putting oil, water, etc. on it."
      ],
      "links": [
        [
          "hair",
          "hair"
        ],
        [
          "flat",
          "flat"
        ],
        [
          "oil",
          "oil"
        ]
      ]
    }
  ],
  "word": "slick back"
}