Miss tea break for artist (7)
I believe the answer is:
matisse
'for artist' is the definition.
(Henri Matisse, 1869-1954, French artist)
'miss tea break' is the wordplay.
'break' indicates anagramming the letters.
'miss'+'tea'='misstea'
'misstea' is an anagram of 'MATISSE'.
(Other definitions for matisse that I've seen before include "French painter, d. 1954" , "Henri --, French artist" , "Henri -, Fr. artist" , "Henri -, C twenty Fr. painter, sculptor, illustrator" , "French painter, Henri, d.1954" .)