Decorative trim (4)
I believe the answer is:
lace
'decorative trim' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lace that I've seen before include "Shoestring: delicate ornamental fabric" , "Flimsy fabric or shoe fasterner" , "Fine open fabric" , "Fabric made in openwork design" , "Fortify with spirits; open fabric" .)