牙冠 [－－]

Jyutping ngaa4 gun1
Pinyin yá guān

Definitions (CC-CEDICT)
  1. crown of a tooth
  2. (dental) crown
Definitions (Wiktionary)
  1. noun
    crown (part of a tooth projecting from the gum)
  2. noun
    crown (a type of dental restoration)