Crossword Genius

Maybe use too few items plucked from cushion or bolster (8)

Ross

I believe the answer is:

underpin

This clue is a double definition.

'maybe use too few items plucked from cushion' is the first definition.
(use too few pins)

'bolster' is the second definition.
(thesaurus)

'or' acts as a link.

(Other definitions for underpin that I've seen before include "Form the basis for" , "Prop up with nun pride" , "corroborate" , "Support or strengthen from beneath" , "buttress" .)

I've seen this clue in The Times.
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