Turn wife on part of foot (5)
I believe the answer is:
Here is my best explanation:
'turn' is the definition.
'wife on part of foot' is the wordplay.
'wife' becomes 'w'.
'on' says to put letters next to each other.
'part of foot' becomes 'heel' (I've seen this before**).
(Other definitions for wheel that I've seen before include "- - of Fortune", "Rotate", "Roll", "Rotating circular frame", "disc", "Circular frame on axle", "Change direction as if on an axis", "Circular steering device", "Circular frame - old instrument of torture" and "Revolutionary invention!".)