1. [ noun ] the protruding part of the lower jaw
Synonyms: chin
Related terms: feature buccula face goatee
2. [ noun ] (botany) a projection like a chin formed by the sepals and base of the column in some orchids
Related terms: plant_part orchid
3. [ noun ] (zoology) a projection below the mouth of certain mollusks that resembles a chin
Related terms: body_part insect orchid
Similar spelling:   mean_time