Pole on amazing roll initially (3)
I believe the answer is:
oar
'pole' is the definition.
(I've seen this before)
'on amazing roll initially' is the wordplay.
'initially' indicates taking the first letters.
The first letters of 'on amazing roll' is 'OAR'.
(Other definitions for oar that I've seen before include "Pole for rowing" , "Pusher" , "Propelling pole" , "that may be feathered?" , "Rower" .)