Etching - or a watercolour? (8)

I believe the answer is:

aquatint

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'etching' is the definition.
(aquatint is a kind of etching)

I don't understand the remainder of the clue.

(Other definitions for aquatint that I've seen before include "Watercolour-like etching" , "sort of engraving" , "form of etching" , "Type of print" .)

I've seen this clue in The Globe and Mail.

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