Sherwood friar (4)
I believe the answer is:
tuck
'sherwood friar' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tuck that I've seen before include "Pleat in garment" , "School food" , "Stitched fold in garment" , "Flattened pleat stitched in place" , "Food for schoolboys" .)