dub

1. A mostly instrumental remix with all or part of the vocals removed. (countable)
2. A style of reggae music involving mixing of different audio tracks. (uncountable)
3. A trend in music starting in 2009, in which bass distortion is synced off timing to electronic dance music. (uncountable)
4. A piece of graffiti in metallic colour with a thick black outline. (countable, slang)
5. The replacement of a voice part in a movie or cartoon, particularly with a translation; an instance of dubbing. (countable)

Plural dubs