Some neat hosiery for a musketeer (5)
I believe the answer is:
athos
'a musketeer' is the definition.
(musketeer from The Three Musketeers)
'some neat hosiery for' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'ATHOS' can be found hidden inside 'neat hosiery for'.
(Other definitions for athos that I've seen before include "Colleague of Porthos, Aramis" , "Brave soldier" , "Mount - musketeer" , "Literary musketeer" , "Greek monastic mountain" .)