1. A rare, unique slang meaning "the worst part(s)" or "dirty/grimey".
2. "Fuck."

The word's original origin comes from wine brewers. "Dregs" or "lees" were the words applied to the wine residue during the aging process. "Dregs" also comes from the grammatical base of the word "dark".
1. "The best deals are in the dregs of the city..."

2. Tanto: "Shoot 'im! Shoot 'im!"
*won't fire*
Tanto: "It's on safety!"
Garie: "DREGS!!"
by nikkan_hanil September 23, 2004
Get the dregs mug.
The reusable residue left after cooking an opiate for the purpose of injection.
I'm dopesick enough that even your dregs are enough to get me off.
by Greg A. June 11, 2005
Get the dregs mug.
The act of removing a student from a college class in the DataTel system used by many higher educational institutions. It is the four letter code for performing such a purge act within the system. Administrators and students are using this terminology. Pronounced as "de-reg".
If you do not pay for your classes the system will DREG you from them.

I was DREGed from my classes for non-payment.

The system will be DREGing students on Monday for non-payment of classes.
by PaPaB53 August 16, 2010
Get the DREG mug.
That spaced out feeling the morning after, or after the comedown of, a large session of pot smoking.
Sam: "Man i feel so doughy after those cones last night"
Dylan: "Yeah same, thats called dregged"
by PB4-1 October 29, 2013
Get the dregged mug.
Somtimes referred to as a hangover, or many days not taking a bath and you look like skidrow, or a bad hair day.
>
Gina: "Man the dregs are beating you down. You need to drink less"

John: "Hey, get off my case. I'll drink all I want!"

>
Chris: "Man your dregs stink. Clean your act up! You look like skid-row!"

Mark: "Man I don't feel like it."
by JamBot October 16, 2006
Get the dregs mug.
A dreg is a positive drug. Hence, DREGS.

The u in drug stands for uuurgh. (tired)

the e in dreg stands for energy.
EG. Yo dude, my dreg is chocolate./ Smarties are some good dregs.

Dreg/Dregs
by EllSlick August 12, 2009
Get the Dreg/Dregs mug.
drinking the last few mouth fulls left in people's drinks in a pub or at a party without their permission because you haven't got your own drink, usually done by young teenagers or people who've had way too much
"what were you drinking last night?" "not sure I was just dregging"
by annyyyy September 27, 2009
Get the dregging mug.