Note composed by British woman (5)
I believe the answer is:
breve
'note' is the definition.
(musical note)
'british woman' is the wordplay.
'british' becomes 'br' (abbreviation for British).
'woman' becomes 'eve' (Eve is an example).
'br'+'eve'='BREVE'
'composed by' acts as a link.
(Other definitions for breve that I've seen before include "Long musical note" , "Accent - musical note" , "Accent placed over a vowel" , "Note with the time value of eight crotchets" , "Rarely used musical note" .)