Crossword Genius

Field of expertise (4)

Ross

I believe the answer is:

area

'field of expertise' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for area that I've seen before include "Locality" , "Territory" , "Speaking formally to (someone)" , "environs" , "The measure of a surface" .)

I've seen this clue in the LA Times, The Wall Street Journal, the Newsday and the Universal.
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