Tribute, as inmates toil abroad (11)
I believe the answer is:
testimonial
'tribute' is the definition.
(I know that tribute can be written as testimonial)
'inmates toil abroad' is the wordplay.
'abroad' indicates anagramming the letters (letters move around or go abroad).
'inmates'+'toil'='inmatestoil'
'inmatestoil' with letters rearranged gives 'TESTIMONIAL'.
'as' acts as a link.
(Other definitions for testimonial that I've seen before include "Public tribute (to someone)" , "Tribute or token of respect" , "Commendation" , "special match" , "Character recommendation - tribute for service" .)