Definition of dub
Main Entry: 4dub
Function: transitive verb
Inflected Form(s): dubbed; dub•bing
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to add (sound effects or new dialogue) to a film or to a radio or television production -- usually used with in
to provide (a motion-picture film) with a new sound track and especially dialogue in a different language
to make a new recording of (sound or videotape already recorded); also : to mix (recorded sound or videotape from different sources) into a single recording
Merriam-Websters Dictionary
DubCitySound