a type of male haircut. Its usually blonde, naturally straight, a little shorter than shoulder length and all the same length with absolutly no layers. reminisent of the early-mid 90s. if you saw someone with this cut, they usually look like their name would be colby, if its not already. they also typically look like they belong in the babysitters club.
"he has such a colby haircut"
"ew did you see that colby back there?"