I'm enjoying this left turn (5)
I believe the answer is:
wheel
'turn' is the definition.
(I've seen this before)
'i'm enjoying this left' is the wordplay.
'i'm enjoying this' becomes 'whee' (excited or joyful expression).
'left' becomes 'L' (common abbreviation).
'whee'+'l'='WHEEL'
(Other definitions for wheel that I've seen before include "One needless to reinvent" , "Circular frame with spokes" , "Catherine -; gear -" , "Cycle; swivel" , "No need to re-invent it!" .)