Small pleasure boat (6)
I believe the answer is:
pedalo
'small pleasure boat' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for pedalo that I've seen before include "Small foot-powered pleasure boat" , "Foot-powered pleasure craft" , "Foot-operated boat" , "Small pleasure craft driven by paddles" , "Pleasure craft -- old ape (anag)" .)