Firm receives clear order for a boat (7)
I believe the answer is:
coracle
'boat' is the definition.
(coracle is a kind of boat)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for coracle that I've seen before include "Welsh version of the currach" , "Oval rowing boat" , "Welsh rowing boat" , "Small wickerwork boat" , "little boat" .)