Oboe, for one (8)
I believe the answer is:
woodwind
'oboe for one' is the definition.
(oboe is a kind of woodwind)
This is the entire clue.
(Other definitions for woodwind that I've seen before include "Flute or oboe, for instance" , "Flutes, oboes etc." , "Group within orchestra" , "musicians" , "Section of orchestra" .)