biconcave /bī-konˈkāv/

Concave on both sides

• engilding
• engilds
• engilt
• engine
• engined
• engine-driver
• engine-drivers
• engineer
• engineered
• engineering
• engineerings
• engineers
• engineer's chain
• engineer's chains
• engine-fitter
• engine-fitters
• engineless
• engine-man
• engine-men
• enginer
• engineries
• engine-room
• engine-rooms
• enginers
• enginery