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A chinese counting machine. Now outdated, has been banished to preschools and daycare centers for childrens entertainment. Sometimes considered, in its most basic form, the first computer.

Consists of 5 horizontal bars, each holding a number of beads that slide back and forth.
The little girl pushed the beads on the abacus from one side to the other.
by QueenSammich April 30, 2005
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Apr 16 Word of the Day
"allow it" means to just leave something alone, or don't worry about it. People in West London say this quite often.
Ahmed: Wanna walk to the station?
Joseph: Nah, allow it blud, can't be arsed, I'mma get the bus.
by ak47 February 27, 2004
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2
A primitive calculator used by both old people and technophobes.
Oh my god it runs on batteries, I'll stick to the good old abacus.
by Jimothjim April 19, 2006
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3
a tool used by the Chinese in the early times. An abacus can be used to do arithmetic by hand.
"Quinn used an abacus to count to 100."
by Kasey!! and Quin!! June 21, 2008
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4
Noun. Someone who is really good at maths.
"134+4765=4899"
"John, all I can say is you're an abacus!"
by Alex Quantashassle April 21, 2005
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5
An instrument used to calculate numbers and other mathematical problems, which is 10 times better and faster than calculator.
Abacus vs. Calculator, who wins?
Abacus, of course!
by Le Mao September 11, 2012
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6
a tool used by the Chinese in the early times. An abacus can be used to do arithmetic by hand.
"Quinn used an abacus to count to 100."
by Kasey!! and Quin!! June 21, 2008
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