astroid /asˈtroid/ (mathematics)

A hypocycloid with four cusps

• chaebol
• chaebols
• chaenomeles
• chaenomeleses
• chaeta
• chaetae
• chaetiferous
• chaetodon
• chaetodons
• Chaetodontidae
• chaetognath
• chaetognaths
• chaetopod
• chaetopods
• chafe
• chafed
• chafer
• chafers
• chafes
• chaff
• chaff-cutter
• chaff-cutters
• chaffed
• chaff-engine
• chaffer