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Jyutping bei6 pei4
Pinyin bèi pí

Definitions (Wiktionary)
  1. verb
    to prep the skin before surgery (by shaving body hair, applying antiseptic, etc.)

備皮 [备-]

Jyutping
Pinyin bèi pí

Definitions (CC-CEDICT)
  1. to prep a patient's skin prior to surgery (shaving hair, cleansing etc)