The definition of a maven is an expert.
(noun)An example of a maven is someone who knows all about wine.
See maven in Webster's New World College Dictionary
☆ or mavin
noun
Origin: Yiddish < LHeb mēvin
See maven in American Heritage Dictionary 4
also ma·vin
nounOrigin:
Origin: Yiddish meyvn
Origin: , from Hebrew mēbîn
Origin: , active participle of hēbîn, to understand, derived stem of bîn, to discern; see byn in Semitic roots
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