Crossword Genius

Conveyance's surface (5)

Ross

I believe the answer is:

plane

This clue is a double definition.

'conveyance's' is the first definition.
(plane is a kind of conveyance)

'surface' is the second definition.
(I know that plane is a type of surface (mathematics))

(Other definitions for plane that I've seen before include "Nepal (anag.)" , "Smooth" , "What imitates bird" , "Aircraft - level surface - carpenter's tool" , "Woodworker's tool" .)

I've seen this clue in The Mirror.
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