Leatherworker's tool (3)
I believe the answer is:
awl
'leatherworker's tool' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for awl that I've seen before include "Instrument for boring holes" , "Boring tool sounds comprehensive" , "Shoemaker's tool" , "Law about a drilling tool" , "Pointed tool for making small holes" .)