A short jumper, showing style (4)
I believe the answer is:
afro
'style' is the definition.
(Afro is a type of hairstyle)
'a short jumper' is the wordplay.
'short' means to remove the last letter.
'jumper' becomes 'frog' (something which jumps).
'frog' with its final letter removed is 'fro'.
'a'+'fro'='AFRO'
'showing' is the link.
(Other definitions for afro that I've seen before include "Roundish hairstyle" , "Type of 18" , "Hairstyle adopted by the young Michael Jackson" , "Big hairstyle" , "Hairdo of the 1960s and 70s" .)