Enjoy gum (4)
I believe the answer is:
chew
'enjoy gum' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for chew that I've seen before include "Work or grind between teeth" , "Bite repeatedly" , "Masticate, grind between teeth" , "Ruminate" , "Treat for dog" .)