in terms of drugs:

short for mdma, which is ecstasy, ..
however it's in the form of a powder, usually made by grindin up E pills

is snorted, can be rubbed into gums also for less effect
jojo: how much for sum MD?
benji: £15 for half gram
jojo: i'll take it
by kaitt October 20, 2007
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Masterbation Depervation Syndrom. The male form of pms, occurs when males fail to masterbate frequently enough inturn making them have all the bitchy qualities of a girl on her period.
Fran: "Dude, Jim is being a total bitch lately!"
Nicole: "Yeah he's totally mds-ing, gross..."
by Sick of bitchy boys December 21, 2010
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1. Medical doctor. The graduate of an allopathic medical school who prefers to treat diseases rather than people and shudders at the thought of having to touch people.

2. Medical doctor. The graduate of an osteopathic medical school who failed the courses in osteopathic manipulative medicine.
1. "A stethescope? You mean I have to touch him? Can't I just order an echo and prescribe some pain pills?"

2. "Isn't an MD what they give you when you fail OMM?"
by datchbatch September 16, 2006
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MD stands for more drinks. It is a rating system used for guys to communicate with one another about how many drinks they need to take before they would fornicate with that specific girl who may not look so great.

Rating system:
1MD: probably still smash when sober
2MD: state of mind is slightly altered but loosening up
3MD: feeling pretty good now 5s are looking like 8s
4MD: damn im drunk every girl is looking good now

1B (1 bottle): Id put it in anything with a hole thats warm, wet, and willing

**Caution: When exceeding the 1B mark may wake up the next morning with a terrible migraine, aching anus, with a guy next to you saying "i had a great night"

or

next to a stripper who's now your wife.

**inspired by the song "1 more drink" by ludacris
guy 1: that girls ugly
guy 2: ya shes a 3md
guy 1: whats a 3md?
guy 2: 3 more drinks before i smash!!
by ShaanDonKhan July 30, 2009
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(n.) MiniDisc - The media that contains (usually musical) data and often goes into a MiniDisc Player.
I popped the MD containing my good mix into my MD player.
by next August 20, 2003
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An abbrivation of the soda Mountain Dew. Used usually by fans of the drink.
Like dude, pass me the MD. I need my fix.
by Kirbz February 21, 2006
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not seeing a person for a certain length of time; missing seeing that person just because they're awesome
I was getting the MDS when I didn't see the Magster for awhile.
by C'mon man! April 8, 2010
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