Gesture from fellow rolling over (3)
I believe the answer is:
nod
'gesture' is the definition.
(nod is a kind of gesture)
'fellow rolling over' is the wordplay.
'fellow' becomes 'don' (I've seen this before).
'rolling over' says the letters should be written backwards.
'don' in reverse letter order is 'NOD'.
'from' is the link.
(Other definitions for nod that I've seen before include "Indicate assent or recognition" , "OT land" , "'A . . . is as good as a wink to a blind horse'" , "Signal with the head" , "Gesture of approval with head" .)