Crossword Genius

Publication with an annual "Power 100" list (5)

Ross

I believe the answer is:

ebony

(Other definitions for ebony that I've seen before include "Hard wood used for black piano keys and in cabinetwork" , "Hard block tropical wood" , "Heavy hard wood, usually black" , "Tree with blackish wood" , "hard stuff" .)

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