Crossword Genius

Crib wheel (6)

Ross

I believe the answer is:

caster

(Other definitions for caster that I've seen before include "One who throws something" , "Founder; type of 12 Ac" , "Crates with kind of fine sugar" , "Small swivelling wheel on furniture" , "Swivelling wheel (E, not O)" .)

I've seen this clue in the Penny Press.
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