dub

I. n

1.

a kind of heavy reggae music in which instrumental tracks already recorded are electronically altered and overlaid ('dubbed' one on another) with vocals and sound effects to create a new piece of music. The form was popular in Jamaica and Britain in the late 1970s and early 1980s.

2.

American

a cigarette

3.

a fool, an incompetent. An almost archaic word which survives among older speakers in the USA and Australia.

II. adj

American

fashionable, aware. In this sense the word was a vogue term of the lexicon of the grunge movement originating in Seat-tle in 1993 and functioned as a synonym of hip and dope, etc.