buccal
Pronunciation:
/ˈbʌ.kəl/adjective
Definitions
Of or relating to the cheek or, more rarely, the mouth.
(of a premolar or molar) On the side facing the cheek.
(of a drug) Administered in the mouth, not by swallowing but by absorption through the skin of the cheek; often by placing between the top gum and the inside of the lip.