Light boat (5)
I believe the answer is:
canoe
'light boat' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for canoe that I've seen before include "Light, narrow open boat" , "Light boat propelled by paddle(s)" , "Small boat with paddles" , "Narrow paddle boat" , "Boat one paddles" .)