(pos:名詞)<explanation>yue:牙齒咬口唔齊，突咗喺嘴唇出面，因應牙嘅位置又有分哨牙同虎牙兩種eng:buck teeth, protruding teeth<eg>yue:佢有棚齙牙，笑起上嚟好明顯。eng:His protruding teeth is quite conspicuous whenever he smiles.