Ring setting? (3)
I believe the answer is:
tub
'ring setting?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tub that I've seen before include "Pot (of e.g. ice-cream)" , "Unseaworthy vessel" , "Kind of bath" , "Bath; clumsy ship" , "subject of Jonson's tale" .)