Synonyms of 'spindle'
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An axle is a rod connecting a pair of wheels on a car or other vehicle.
The engine, gearbox and black axle needed to be replaced.
A pin is any long narrow piece of metal or wood that is not sharp, especially one that is used to fasten two things together.
the steel pin holding his left leg together
Thesaurus for spindle from the Collins English Thesaurus
A spindle is a rod in a machine, around which another part of the machine turns.