Pins little grasshoppers by the wings (4)
I believe the answer is:
legs
'pins' is the definition.
(pins can informally mean someone's legs)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for legs that I've seen before include "Stages of a journey" , "Sections of a journey or course" , "Members" , "associated with 11 in game" , "Lower limbs" .)