Part of body being stroked occasionally (3,3)
I believe the answer is:
big toe
'part of body' is the definition.
'being stroked occasionally' is the wordplay.
'occasionally' means one should take alternating letters.
'being'+'stroked'='beingstroked'
The alternating letters of 'beingstroked' are 'BIG TOE'.
(Other definitions for big toe that I've seen before include "Largest pedal extremity" , "member of the body" , "Corn grows here" , "Largest foot digit" , "that once went to market?" .)