buccal

形容词 buccal:

1. of or relating to or toward the cheek
2. lying within the mouth
3. toward the inside of the cheek

buc.cal

adj.（形容词）
Of or relating to the cheeks or the mouth cavity.
脸颊的，口腔的：脸颊的或口腔的，或者与其相关的

来源：
From Latin bucca [cheek]
源自 拉丁语 bucca [脸颊]