Pouched rat (6)
I believe the answer is:
gopher
'pouched rat' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for gopher that I've seen before include "mine" , "Burrowing rodent with cheek pouches" , "Method of teaching reading by sounds" , "Burrowing rodent of north and central America" , "Burrowing US rodent" .)