Propelled a scull (5)
I believe the answer is:
oared
'propelled a scull' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oared that I've seen before include "Prepared for a row" , "Provided with motive power" , "Propelled like a rowing boat" , "Equipped with rowing blades" , "ready for a row" .)