Bordeaux embraces fashionable instrument (8)
I believe the answer is:
clarinet
'instrument' is the definition.
(clarinet is a kind of instrument)
'bordeaux embraces fashionable' is the wordplay.
'bordeaux' becomes 'claret' (I've seen this before).
'embraces' indicates putting letters inside.
'fashionable' becomes 'in' ('in' can be similar in meaning to 'fashionable').
'claret' placed around 'in' is 'CLARINET'.
(Other definitions for clarinet that I've seen before include "Source of music" , "Single reed woodwind instrument" , "Woodwind instrument played by Artie Shaw and Benny Goodman" , "Instrument in claret, strangely" , "Music-maker" .)