This performer may give it a rest (7)
I believe the answer is:
artiste
'this performer' is the definition.
(an artiste is a performer or entertainer)
'give it a rest' is the wordplay.
'give' indicates anagramming the letters (I've seen 'giving' mean this (the letters give the letters for another word)).
'it'+'a'+'rest'='itarest'
'itarest' is an anagram of 'ARTISTE'.
'may' is the link.
(Other definitions for artiste that I've seen before include "A sitter for creative person" , "Entertainer, singer or dancer" , "'Public performer, dancer or singer (7)'" , "professional dancer?" , "Attires (anag.)" .)