Crossword Genius

That which may make us brown paper? (3)

Ross

I believe the answer is:

sun

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'paper?' is the definition.
(The Sun, UK newspaper)

I can't explain the remainder of the clue.

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(Other definitions for sun that I've seen before include "Helios, in Greek myth" , "Star that provides light and heat for a solar system" , "Hub of our planetary system" , "Nearest star to Earth" , "Our central star" .)

I've seen this clue in The Times.
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