Lei means a flower bud — the bloom about to open, full of promise. It carries freshness and hope.
Lei 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 Lei reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.