Ebony is from the English ebony — from the Greek ébenos via Egyptian hbny — referring to the dense black hardwood from the Diospyros tree. Ebony is one of the African-American feminine names of the 20th + 21st century — closely associated with the Ebony Magazine (founded 1945 by John H. The name became most-popular in U.S. Notable bearer: Ebony Bowden — American journalist.
Ebony does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Ebony reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.