"water-slickened" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "water",
        "3": "slickened"
      },
      "expansion": "water + slickened",
      "name": "com"
    }
  ],
  "etymology_text": "water + slickened",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "water-slickened (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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 links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Water",
          "orig": "en:Water",
          "parents": [
            "Liquids",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Made slippery by water."
      ],
      "id": "en-water-slickened-en-adj-lEMZEQIU",
      "links": [
        [
          "slippery",
          "slippery"
        ],
        [
          "water",
          "water"
        ]
      ],
      "related": [
        {
          "word": "rain-slickened"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "water-slickened"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "water",
        "3": "slickened"
      },
      "expansion": "water + slickened",
      "name": "com"
    }
  ],
  "etymology_text": "water + slickened",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "water-slickened (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "rain-slickened"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English compound terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English links with redundant wikilinks",
        "English multiword terms",
        "English uncomparable adjectives",
        "en:Water"
      ],
      "glosses": [
        "Made slippery by water."
      ],
      "links": [
        [
          "slippery",
          "slippery"
        ],
        [
          "water",
          "water"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "water-slickened"
}