a person who knows a lot about a certain subject,like art, cook etc. its something like a colectionist/expert or very wise something like that too.

im a wine connoiseur
im a art colectionist
by Angello Lopez August 10, 2006
(kon'e-sewer-hewer) n. A woman who engages in promiscuous sexual intercourse and is a competent and critical judge in such matters; A "high-class whore"
"She's going home with the senator tonight! That girl is a real connoiseur hoo-er!"
by The Loron December 30, 2008