Draw small boat with sails (6)
I believe the answer is:
sketch
'draw' is the definition.
(sketching is a kind of drawing)
'small boat with sails' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'boat with sails' becomes 'ketch'.
's'+'ketch'='SKETCH'
(Other definitions for sketch that I've seen before include "Short comic routine" , "Small sailing boat" , "Rapid drawing - short play" , "Short humorous scene" , "Simple drawing" .)