1. A shape that curves or bends inward
   - concavity, incurvation, incurvature

Derived forms: concave shapes

Type of: solid

• revenuer
• reverb
• reverberance
• reverberant
• reverberate
• reverberating
• reverberation
• reverberative
• reverberatory
• reverberatory furnace
• revere
• revered
• reverence
• reverend
• Reverend Dodgson
• reverent
• reverential
• reverentially
• reverently
• reverer
• reverie
• revers
• reversal
• reverse
• reverse engineering