A nickname for Chuck D, the MC of seminal rap group Public Enemy. Compared to other MCs, Chuck spits harder, more serious game.
From Public Enemy's "Rebel Without a Pause":
Yes the rhythm the rebel
Without a pause I'm lowering my level
The hard rhymer where you never been I'm in
You want stylin' you know it's time again
D the enemy tellin you to hear it
One who lamps. The term literally means to hang out under a street lamp but can be applied to any sort of chilling. While anyone can cold lamp, the proper noun "Cold Lamper" can only be applied to Flava Flav, member of the seminal rap group Public Enemy.
Flava Flav is the Cold Lamper. He straight up chills, yo.