Plenty of warm clothes (3)
I believe the answer is:
lot
'plenty' is the definition.
(thesaurus)
'of warm clothes' is the wordplay.
'of' says the answer is hidden in the clue.
'LOT' is hidden in the letters of 'warm clothes'.
(Other definitions for lot that I've seen before include "Great deal; destiny" , "Item for sale at auction" , "Kismet" , "Great amount" , "Where filming may take place" .)