Use a stencil (5)
I believe the answer is:
trace
'use a stencil' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for trace that I've seen before include "Outline" , "Detect - track" , "Track down; tiny amount" , "Pinch" , "Very small amount that can only just be detected" .)