1. 颊的：37. vault 弯窿 | 38. buccal 颊的 | 39. mucosa 粘膜
2. 口腔的：bubonic plague 淋巴腺鼠疫 | buccal 口腔的 | bucht 海湾
3. 口的：bucca 颊 | buccal 口的 | buccal cavity 口腔
4. 颊面：颊面 Buccal | 舌面 Lingual | 腭面 Palatal
adj
1. oriented toward the inside of the cheek
e.g. the buccal aspect of the gum
2. lying within the mouth
e.g. a buccal gland
3. of or relating to or toward the cheek