Section of the Moroccan border (3)
I believe the answer is:
hem
'border' is the definition.
(I've seen this before)
'section of the moroccan' is the wordplay.
'section of' indicates a hidden word.
'HEM' is hidden within 'the moroccan'.
(Other definitions for hem that I've seen before include "Double-backed border of a garment" , "Stitched edge of garment" , "Border; fringe" , "Finished edge of a piece of cloth" , "A stitched border of cloth" .)