- The definition of a maven is an expert.
An example of a maven is someone who knows all about wine.
A wine maven.Licensed from iStockPhoto
☆ or mavin
Origin: Yiddish from LHeb mēvin
Used by arrangement with John Wiley & Sons, Inc.
Origin: Yiddish meyvn, from Hebrew mēbîn, active participle of hēbîn, to understand, derived stem of bîn, to discern; see byn in Semitic roots.