Crossword Genius

Biblical man who lost his birthright (4)

Ross

I believe the answer is:

esau

(Other definitions for esau that I've seen before include "He gave away his biblical birthright for a mess of pottage" , "He traded his birthright for a mess of pottage" , "Biblical hunter" , "wronged brother" , "One of Isaac's sons" .)

I've seen this clue in The New York Times.
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