1. Disk Operating System: a disk-based operating system, usually referring to MS-DOS. Originally developed by Microsoft for IBM, MS-DOS was once the standard operating system for IBM-compatible personal computers.

2. Denial of Service: a type of attack on a network that is designed to bring the network to its knees by flooding it with useless traffic.

3. Department of State: a federal or state governmental department handling issues central to the country or each of the individual States, such as travel, tourism, elections, charters and licensing, historic records, and overall public security.

4. Department of Safety: a department used by some U.S. states and cities which usually handles driver and vehicle, police, enforcement, fire, corrections, and crime statistics services for the public.

5. Department of Statistics: a department used by some countries for handling statistical reports vital to their economies and governments.
1. DOS required a lot of typing.
2. DOS attacks can cost companies millions of dollars in lost revenue.
3. If you're interesting in become a licensed lawyer, visit the DOS.
4. In some states, the DOS handles driver's licenses instead of the DMV.
5. The DOS just released new statistics on the gross national product.
by Steven May 27, 2004
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To do stuff and more
What does it mean to do the do? Uh, I think it's when you're with a girl and you do stuff and more
by king lenny October 17, 2005
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Doctor of Osteopathic Medicine - One of the two types of fully licensed medical doctors in the United States, the other being doctors of allopathic medicine (see MD). While practicing conventional medicine much like his or her M.D. colleagues, also maintains the ability to perform osteopathic manipulative medicine (OMM), also referred to as osteopathic manipulative treatment, or technique (OMT). A small minority of osteopathic physicians use the physical manipulative medicine (OMM/OMT).
I had to go to the ER and the doctor that treated me was a DO.

by Dr Kevorkian February 19, 2006
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South African slang for 'sleep', derived from Afrikaans.
Sweet i'm tired, gonna go dos.
by Nushki June 30, 2009
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what women say when they mean the opposite
Man: "Hey Carrie its Arnold from the bar, call me tonite and we'll get another drink."

Woman: "OK, will do."
by santi11 January 19, 2010
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1: To perform or execute
2: To kill someone
3: Hairstyle
4: To engage in sexual Intercourse
5: Attractive Dutch recording artist best know for her vocals in DJ Sammy's cover of "Heaven"
1: I'm going to do my homework.
2: We're going to do him in.
3: Yo Holmes! Do not mess up the do!
4: My and the bitch are going to do it.
5: Check out Do's site at www.domusic.nl
by Jimbo January 26, 2005
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