Definitions for "Screen pass"
a short forward pass in which the receiver is protected by a screen of blockers
A delayed passing play in which the defensive line is allowed to penetrate the backfield and the ball is thrown to a running back or receiver who has a wall of blockers in front of him made up of offensive linemen who have pulled out of position.
A pass from behind the line of scrimmage, after a deep drop by the Quarterback. It's a play that allows the rushers to charge through as the offensive linemen fake block them, only to set up a wall for a receiver, or runningback to catch the pass and run behind.