Cycling imp shows wit (6)
I believe the answer is:
esprit
'wit' is the definition.
(esprit can mean being witty)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for esprit that I've seen before include "Lively wit" , "Liveliness of mind or spirit" , "Liveliness - priest (anag)" , "Vivacious wit" , "Vivacity, liveliness" .)