cop a plea

cop a plea  {v. phr.},  {slang},  {colloquial}
To plead guilty during a trial in the hope of getting a lighter sentence as a result.
The murderer of Dr. Martin Luther King, Jr., copped a plea of guilty, and got away with a life sentence instead of the death penalty.
Categories: death {colloquial} {slang} {v. phr.}