Bag English beef (5)
I believe the answer is:
gripe
'beef' is the definition.
(I know that beef can be written as gripe)
'bag english' is the wordplay.
'bag' becomes 'grip' (type of travelling bag).
'english' becomes 'E' (abbreviation).
'grip'+'e'='GRIPE'
(Other definitions for gripe that I've seen before include "Complain; stomach pain" , "Grievance" , "Protest" , "beef" , "Complain; colic (water)" .)