Waterproof canvas (4)
'waterproof canvas' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tarpaulin that I've seen before include "oilskin hat" , "seaman rarely required" , "It provides protection" , "waterproof material" , "Waterproofed canvas" .)
'waterproof canvas' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tarp that I've seen before include "Cover" , "Bail-out" , "canvas sheet" .)