[cast.er] n (14c) 1: one that casts; esp: a machine that casts type
2. or cas.tor a: a usu. silver table vessel with a perforated top for sprinkling a seasoning (as sugar or spice) b: a usu. revolving metal stand bearing condiment containers (as cruets, mustard pot, and often shakers) for table use: a cruet stand
3: any of a set of wheels or rotating balls mounted in a swivel frame and used for the support and movement of furniture, trucks, and portable equipment
4: the slight usu. backward tilt of the upper end of the kingbolt of an automobile for giving directional stability to the front wheels