1: A guitar that uses a large resonance box to amplify and broadcast sound. Generally mellower than other kinds of guitars. Since it doesn't require an amp to be heard, it's much more portable than an electric. Often combined with mics or pre-amps for playing in venues.

2: A type of guitar often used at parties by music-illiterate dicks trying to steal your girlfriend.
1: "I really love the tone on this Takamine acoustic guitar. The cedar construction really gave it a warm sound."

2: Guy with acoustic guitar: *singing* I gave my love a cherry / That had no stone / I gave my love a chicken / That had no bones / I gave my love a story / That had no end / I gave my...
Bluto: *grabs the guitar and smashes it against the wall* Sorry. - Animal House
by ncstate boy June 23, 2006
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Guy1: How was that girl last night?
Guy2: she was good but she didnt scream she was an acoustic chick
by trackstar17 April 7, 2009
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An acoustic toothbrush is a non-electric toothbrush.
I used an acoustic toothbrush on my vacation.
by frangebort August 7, 2017
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the act of shaving with razor; not an electric shave
"Hey man, do you use Norelco?" "No way, I shave acoustic!"
by ExtraFine August 12, 2004
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A game that requires no electronic components. The term has been adopted by independent game designers as a way to distinguish a game as being non-electronic, without implying that such a game is "missing" something. Acoustic games range from ancient games like Chess and Go to modern games like Carcassonne and Settlers of Catan. The terms can also be applied to non-electronic versions of electronic games, like World of Warcraft: The Board Game.
"On a rainy day with close friends, I'd much rather play an acoustic game like Fluxx, Poker or Chinese Checkers than play video games."
by Daniel Solis July 31, 2006
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Acoustic soul music originates from soul and gospel music and played acoustically as the name suggests. Acoustic soul is oriented toward spiritual inspiration, but played without use of powered instruments. The only power in Acoustic soul music is the power behind the lyrics and heart and soul of the artist who sings this amazingly complex and heart felt genre of music.
Have you heard Laura's acoustic soul music style? She sings like an Angel.
by aa75 January 21, 2012
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Sledding without the use of a sled by sitting down on your rear end or knees and sliding down the hill.
Child: Aww Man! My sled just spontaneously combusted.

Goku: Its okay you can use the Dragonballs which I have collected to wish for a new one!!

Child: Hurray!!!

Goku: Just kidding. Your going acoustic sledding.

by Jacob the Almighty Magician January 27, 2009
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