Real Dictionary

dub
If a film or soundtrack in a foreign language is dubbed, a new soundtrack is added with actors giving a translation.
verb: If someone or something is dubbed a particular thing, they are given that description or name.

dub in American English 1
a clumsy, unskillful person
to hit; strike
transitive verb: to invest with any name, character, dignity, or title; style; name; call

dub in American English 2
dialogue, music, etc. inserted in a film's soundtrack
to rerecord the sound from (an old recording)
noun: an awkward, unskillful person

dub in American English 3
a small pool or puddle
intransitive verb: to thrust; poke
noun: a thrust; poke

dub in American English 4
intransitive verb: to copy program material from one tape recording onto another
transitive verb: to furnish (a film or tape) with a new sound track, as one recorded in the language of the country of import

dub in American English 5
noun: a pool of water; puddle

dub in British English 1
noun: the sound of a drum
verb: to invest (a person) with knighthood by the ritual of tapping on the shoulder with a sword

dub in British English 2
noun: the new sounds added
verb: to alter the soundtrack of (an old recording, film, etc)

dub in British English 3
verb

dub in British English 4
noun: a clumsy or awkward person or player
verb: to bungle (a shot), as in golf

dub in British English 5
noun: a pool of water; puddle

dub in British English 6
verb: to contribute to the cost of (something); pay