What Santa did to get around greatly impressed, it's said (8)
I believe the answer is:
sleighed
'said' is the definition.
Although both the answer and definition are past participle verbs, I don't understand how they can define each other.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for sleighed that I've seen before include "Went as itinerant toymaker" , "Was dragged along by dogs" .)