a person having control or authority over another; a ruler or governor
an owner, esp of a slave or animal
a male teacher
an employer
the male head of a household
a person qualified to command a merchant ship
the head of a college
a presiding officer in an institution or society, e.g. a Masonic lodge, or at a function
(often Master) somebody who directs a hunt and has overall control of the pack of hounds used in it
(Master) used as a title for a youth or boy too young to be called Mr
(Master) archaic Mr
(often Master) a revered religious leader
(often Master) an officer of the Supreme Court of England and Wales with responsibility for preliminary or procedural matters in High Court cases
a person holding an academic degree higher than a bachelor's but lower than a doctor's
an artist, performer, player, exponent of something, etc who is extremely skilled or accomplished
a master of disguise
in chess or bridge, somebody who has won a specified number of games in tournaments
a workman qualified to teach apprentices
a person or thing that conquers or masters; a victor or superior
if you can dream and not make dreams your master — Kipling
In this young obscure challenger the champion had found his master
a mechanism or device that controls the operation of another: compare slave1 (3)
an original film, recording, etc from which copies can be made