Your lad cycling as the Virgin Mary (3,4)
I believe the answer is:
our lady
'the virgin mary' is the definition.
(I've seen this in another clue)
'your lad cycling' is the wordplay.
'cycling' indicates anagramming the letters.
'your'+'lad'='yourlad'
'yourlad' with letters rearranged gives 'OUR LADY'.
'as' acts as a link.
(Other definitions for our lady that I've seen before include "an object of veneration" , "Virgin Mary" .)