Definition of "abbot"

The superior or head of an abbey or monastery.  examples

The pastor or administrator of an order, including minor and major orders starting with the minor order of porter.  examples

A layman who received the abbey's revenues, after the closing of the monasteries.  examples

(archaic, British slang) A brothel-owner's husband or lover.

(archaic, British slang) A ponce; a man employed by a prostitute to find clients, and who may also act as a bodyguard or equivalent to a bouncer.