1. Having a sunken area
   "hunger gave their faces a sunken look"
   - deep-set, recessed

See also: hollow

• genus Claytonia
• genus Cleistes
• genus Clematis
• genus Cleome
• genus Clethra
• genus Clethrionomys
• genus Clianthus
• genus Cliftonia
• genus Clinopodium
• genus Clintonia
• genus Clitocybe
• genus Clitoria
• genus Clostridium
• genus Clupea
• genus Clusia
• genus Cnemidophorus
• genus Cnicus
• genus Cnidoscolus
• genus Coccothraustes
• genus Cocculus
• genus Coccus
• genus Coccyzus
• genus Cochlearia
• genus Cochlearius
• genus Cocos