An adjective to describe something substandard. It is derived from junior college. For example, junior college compared to a real university. It can also be used to describe poor workmanship, such as what you might get from a junior college "grad" or a vo tech "grad." Generally, being descibed as "juco" isn't a good thing.
Guy one: What the hell kind of juco welding job is this? You got a lot of extra weld all over! You're screwing up my car!
Guy two: Hey, that's a great weld, I would have got a B or even an A in my vo tech class if I submitted that.
Guy one: I thought you knew how to weld, I wanted to sell this car when I finished fixing it up. Thanks guy.
1. a community college (from an abbreviation of junior
2. a student of a community collage
He took one class at Juco but never came to start another class.