Some wear nothing - gross (4)
I believe the answer is:
earn
'gross' is the definition.
(thesaurus)
'some wear nothing' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'EARN' can be found hidden inside 'wear nothing'.
(Other definitions for earn that I've seen before include "Deserve; get paid" , "long gone" , "Be paid for work" , "Gain (money, reputation, etc)" , "Gain through labour or work" .)