Briar comes from the English word for a thorny shrub — particularly the wild rose.
Briar has been rising rapidly in the U.S. Today it sits in the U.S. top 500.
Briar 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 Briar reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.