Rear Upper Control Arm - used to control camber and caster when lowering your car.
damn, that guy should get aftermarket RUCA's for that 240sx
by qwarnon October 28, 2009
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To fail something in dramatic amount.
THAT ASClI WAS RUCAS'D
by coprophag November 23, 2004
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In Denmark "Ruca" is a gang from a city called Egtved. It is a gang of the hottest and most handsom men in Denmark. Often members in "Ruca" has a lot of moneys, and wear designer clothes.
Oh man I wish I could be a member of Ruca, they are hust so cool.
by Dahlskov December 21, 2017
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Rucas are a Disney channel couple that are so cute😍😍
by Riverdaleloverlol December 4, 2017
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A name typically used for someone who sits alone in their room, smoking weed. Is also a synonym for "gay".

The term "Ruca" was coined in 2005, during the Great Depression of Retards. They are usually known for having a notably high sex drive, little to no friends, exceptionally small genitalia, and excessive use of words such as cunt, nigger, and fuck.
Damn, I had to talk to Ruca today. I could smell the weed on his breath.

Stupid Rucas'. They're everywhere now.
by pls don't reject August 22, 2019
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