castor¹ or caster /käˈstər/

1. A small swivelling wheel attached to furniture and trolleys with its hub displaced away from the swivel axis, so that movement in any direction causes the wheel to follow this axis
2. A vessel with perforated top for sprinkling sugar, etc

castor action or caster action noun (motoring)

The use of inclined swivel axes or kingpins to give the steerable front wheels a self-centring tendency after angular deflection

• stephanes
• stephanite
• stephanites
• stephanotis
• stephanotises
• step in
• step-in
• step into
• step into someone's shoes
• step into the breach
• stepladder
• stepladders
• stepmother
• stepmotherly
• stepmothers
• stepney
• stepneys
• step on
• step on it
• step on the gas
• step on the juice
• step out
• step out of line
• step-parent
• step-parenting