buccal Syllabification: (buc·cal)Pronunciation: /ˈbəkəl/Definition of buccal adjective technical of or relating to the mouth:the buccal cavity of or relating to the cheek:the buccal side of the molarsOrigin: early 19th century: from Latin bucca 'cheek' + -albuccal in other Oxford dictionaries Definition of buccal in the British & World English dictionary