noun - a term used to describe multiple pounds of any street drug, especially marijuana. Five pounds of marijuana equals a 5 pack.

Slang term for an insult., noun
Term used to signal the start of a verbal altercation. Ussually initiated by clapping hands together and directing forefingers toward your opponent.
Baltimore Slang term used to define an insult, usually one-up'ed by giving someone "the meal"

Striking a brand new pack of cigarettes against the palm in order to compress the tabacco towards the butt in the cigarettes for easy lighting.

Verb. Filling the bowl of a pipe with marijuana.

to carry a weapon

Powder heroin wrapped tightly in paper so that if the piggies get you it can easily be swallowed. Usually $20 worth but can be more or less depending on who you're talking to.

Leicester slang for 'stop'.

Often used as a verb ('Pack doin' vat!') or an interjection ('pack it in!')

In the case of 'pack it in', the last syllable is often elongated when spoken by children or the mentally deficient, resulting in a long, whining phrase that causes the target of the command to 'pack' whatever it is that's annoying the speaker, out of sheer annoyance.