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3.
In vato-speak, a ruco is simply an older guy. Most likely, a señor.
Friend; "Is that your dad?"
Vato; "Yeah, thats him."
Friend; "Ni se watcha tan ruco."
Vato; "People think we're carnáles."
by Rick April 19, 2005
 
1.
The male equivalent of ruca
Hands off that boy, he is my ruco.
by Juanita DelaCruz October 18, 2006
 
2.
The male version of a ruca. A dude that is more to a girl than just a friend with benefits, but not quite her boyfriend. The stage in a relationship right before officially dating.
Kate- Yo, that guy you've been chilln with lately is cute, is he your boyfriend?
Rachel- Naw, he hasn't asked me out yet, he's still just my ruco
by Richerry Walker June 01, 2006
 
4.
A clothing line established in 2003 by Nicholas Ruiz; the word is used as a compliment for a particularly cool item of clothing
That shirt you are wearig is so Ruco
by Anne Svercek June 30, 2004