1. North American annual with red or rose-coloured flowers
   - prairie bird's-foot trefoil, compass plant, prairie lotus, prairie trefoil

Type of: subshrub, suffrutex

• Castanea sativa
• castanets
• Castanopsis
• Castanopsis chrysophylla
• Castanospermum
• castaway
• caste
• caste system
• casteless
• castellan
• castellated
• castellation
• caster
• caster sugar
• castigate
• castigation
• castigator
• Castile
• castile soap
• Castilian
• Castilla
• Castilleia
• Castilleja
• Castilleja chromosa
• Castilleja miniata