Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Linguisticslabialla‧bi‧al /ˈleɪbiəl/ noun [countable] technical SLa speech sound made using one or both lips → bilabial —labial adjectiveOrigin labial (1500-1600) Medieval Latin labialis, from Latin labium “lip” ldoceonline.com
