1. A one-man war is when one person fights against an opponent consisting of several people by himself/herself.

2. It can also be used figuratively, to say a person is fighting against a matter that other people supports by himself/herself, at least with a lack of support for his/her opinion.
1. "He launched a one-man war against police."

2. "He launched a one-man war against graffiti."
by youngchimp November 30, 2012
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1. (adj.) refers to someone who runs everything.
2. (v.) in university ling, refers to someone who has no girlfriend, and thus masturbates.
1. "He does the hiring, he manages the money... its a one man show!"
2. Guy 1: "Does Jimmy have a girlfriend?"
Guy 2: "No dude. He's running a one man show, if you know what I mean."
by uniboi August 20, 2005
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Dude! My girlfriend couldn't come over last, so I had a one man orgy.
by Katana Wistoa January 16, 2011
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When a man grabs his balls and pretends that he is playing craps. In other words, it is the art of whacking off with your balls in your hands at the same time that you are stroking your one-eyed monster.
Travis was at home enjoying his lazy saturday afternoon. Tommy decided to visit Travis and watch a GGW video (with a pillow covering his lap no less). Tommy went to the bathroom and decided to play some one man craps. Travis had to use the batroom and knocked on the door. Tommy, obviously frightened, shreaked and blew his load shouting "Ahhhh, snake eyes!!!".
by Kentpappy May 23, 2007
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a very strong person capable of taking on anything or anyone (one man/woman)
I'm a one-man army!
by dictonaryboy May 21, 2023
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When you do something amazing that would normally take more than 4-5 people.
In Modern Warfare 2:

Guy 1: "Hey you just killed the entire enemy team in Ground War!"

Guy 2: "I know, I'm a one man gangbang!"
by DoctorGoodWood May 28, 2010
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A group or team that relies solely on one person within that team.
Liverpool are a one-man team.
by slim0808 September 17, 2008
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