Get one's teeth into eminent expressionist (5)
I believe the answer is:
munch
This clue is a double definition.
'get one's teeth into' is the first definition.
'eminent expressionist' is the second definition.
(Edvard Munch)
(Other definitions for munch that I've seen before include "Eat noisily" , "Chew steadily and vigorously" , "Eat audibly; painter" , "Chew; Norwegian artist" , "who's popular in the gallery?" .)