Slender wire nail (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
brad
'slender wire nail' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for brad that I've seen before include "Small tapered nail" , "It has a point" , "One may secure" , "Type of nail" , "-- Pitt, US actor" .)