Sign to dart off for some sportswear (7)
I believe the answer is:
leotard
'some sportswear' is the definition.
The definition suggests a singular noun which matches the answer.
'sign to dart off' is the wordplay.
'sign' becomes 'leo' (star sign).
'off' indicates anagramming the letters.
'dart' with letters rearranged gives 'tard'.
'leo'+'tard'='LEOTARD'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for leotard that I've seen before include "Body suit for dancers" , "Acrobat costume" , "Ballet outfit" , "Dancer's tight-fitting garment" , "Tight-fitting garment, for gymnasts say" .)