"wet dog shakes" meaning in English

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      "expansion": "wet dog shakes",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A rapid side-to-side head movement that occurs in mice and rats in association with serotonin 5-HT2A receptor activation."
      ],
      "id": "en-wet_dog_shakes-en-noun-fGx380Hm",
      "synonyms": [
        {
          "word": "WDS"
        }
      ]
    }
  ],
  "word": "wet dog shakes"
}

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      "expansion": "wet dog shakes",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A rapid side-to-side head movement that occurs in mice and rats in association with serotonin 5-HT2A receptor activation."
      ],
      "synonyms": [
        {
          "word": "WDS"
        }
      ]
    }
  ],
  "word": "wet dog shakes"
}