The term 'WHEEL, SWIVEL' can be broken down into two separate words. The first word is 'WHEEL, ' which refers to a circular object that rotates on an axle and is used for transportation or other purposes. The second word is 'SWIVEL, ' which refers to a device that allows an object to rotate around a central point. The crossword solutions for this term are 'CASTER' (6 letters) and 'CASTOR' (6 letters). A CASTER is a wheeled device that is attached to the bottom of furniture or other objects to allow them to move easily. A CASTOR is a type of WHEEL that is designed to SWIVEL in any direction. Both of these terms are related to the term 'WHEEL, SWIVEL' as they both involve the use of a WHEEL that can rotate.