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

Derived forms: incurvatures

Type of: solid

• chalkboard
• chalkiness
• chalkpit
• chalkstone
• chalky
• challah
• challan
• challenge
• challengeable
• challenger
• challenging
• challis
• Chalons
• Chalons-sur-Marne
• chalumeau
• chalybeate
• chalybite
• Chamaea
• Chamaea fasciata
• Chamaecrista
• Chamaecrista fasciculata
• Chamaecyparis
• Chamaecyparis lawsoniana
• Chamaecyparis nootkatensis
• Chamaecyparis thyoides