Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun oral_fissure
1 sense of oral fissure
Sense 1
mouth, oral cavity, oral fissure, rima oris -- (the opening through which food is taken in and vocalizations emerge; "he stuffed his mouth with candy")
=> rima -- (a narrow elongated opening or fissure between two symmetrical parts)