Fold in a petal, possibly (5)

I believe the answer is:
pleat
'fold' is the definition.
(pleating is a kind of folding)
'petal possibly' is the wordplay.
'possibly' is an anagram indicator.
'petal' anagrammed gives 'PLEAT'.
'in a' acts as a link.
(Other definitions for pleat that I've seen before include "Double fold in a garment" , "Fold formed in fabric" , "Gather" , "Leapt (anag)" , "Crease" .)