What is "wisecracker"

Usage examples of "wisecracker".

Not a rattle, not a buffoon, not a wit-snapper or a wisecracker, but a man whose conversation on any theme -- "from grave to gay, from lively to severe" -- was deft, elegant but not ornate, and witty in the sense that it was terse and apt and made brilliant but unexpected similitudes.

Any of you wisecrackers walk out here in plain sight and I’ll dust the street with you.