Thumbtack (7,3)
I believe the answer is:
drawing pin
'thumbtack' is the definition.
(I know that thumbtack can be written as drawing-pin)
This is the entire clue.
(Other definitions for drawing pin that I've seen before include "can be used to secure sheet on board" , "there is a point to it" , "Thumb tack" , "Paper fastener" , "Poster-securing device?" .)