1. A person who is crazy, insane, or generally dangerous
2. A player of Dance Dance Revolution who can easily earn A's on songs in Heavy mode.
1. Man, those guys at Colombine were maniacs.
2. Dude! That Maniac just got a AA on Max Unlimited!
by MrDak August 21, 2004
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random person: dude! that guy is running like a maniac!
other random person: I know! we should get out of here before he looks at us!
by Cookie165 November 05, 2020
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Refers to the ultimate fans of the girl group, Girlicious. It comes from their music video, titled Maniac, off their second album, Rebuilt. The nickname for these fans was given after the departure of 4th member, TIffanie Anderson.
1st person: "Hey, do you like that group Girlicious?"

2nd person: "Oh yeah. I'm a maniac!"
by lainaa October 13, 2010
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a term used in southern states referring to a female that enjoying and is well know for engaging in sexual orgies (running a train; "the whole team") with numerous males that include oral, vaginal, & in some cases anal. Also, known as a slut, ho, ultimate freak. A term from the movie, "Flashdance" with song by Michael Sembello...(she a maniac, maniac, on the floor...)
"Man she down for the whole team, she a MANIAC!"

by R.W.K. July 15, 2006
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an induviual who is said to have mental incapabilities aka lunatic
wtf! she just grabbed the teacher's computer! what a maniac
by Lilandra February 12, 2004
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1. A person who is undergoing a manic episode. Can often seem like the person has had a dozen coffees at once.

Symptoms may include increased speech, a rush of thoughts/hard to follow thought trains, compulsive movements (Finger tapping, dancing, darting head movements etc.) excessive energy, reduced need to sleep (Sometimes going for a week or more without sleeping) and increased appetite.
Can also include boosted confidence, a feeling of almost euphoric happiness, increased production of adrenalin and/or endorphins, excessive or lack of libido and a highly reduced sense or fear of danger.

Often highly intelligent and eccentric, though hard to talk to without going far off topic or spending hours listening to one giant spontanious rant.

Most common in people with the medical conditions mania, manic depression or hypomania.

2. A descriptor applied to people meaning to display a near obsessive love of something. See also: otaku
1. John is a maniac. He often goes days without sleep and seems to never stop moving, plus he seems to always be far ahead of his work.

2. Harry is such a footballmaniac. He's been to every home game this season and won't stop talking about it. He's even painted his car in his teams colors!
by Zeebeethreebee August 02, 2012
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When a dog gets a burst of energy while playing and runs back and forth uncontollably in the hallway or around the house.
I threw the ball and now max is totaly maniacing!
by Tenarr June 26, 2005
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