Sentence:  The appeal of <WSD>spinner wheels</WSD> is lost on me. I get that they make the bag easier to maneuver on airport floors, but I can't see them bouncing along rutted sidewalks very smoothly, at least in their low-end versions. 
Meaning of the word marked with <WSD> tags:  A swivel caster: the combination of a wheel with a swivel joint that allows the wheel to rotate in all directions.