Eurydice (Εὐρυδίκη) combines the Greek eurys (wide) and dike (justice) — meaning "wide-ruling justice." In Greek myth, Eurydice is the wife of Orpheus whom he tried to bring back from the underworld.
Eurydice is rare as a given name but powerful — the subject of Sarah Ruhl's 2003 play and Anaïs Mitchell's musical Hadestown.
Eurydice 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 Eurydice reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.