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.
a short forward pass to a receiver who has blockers in front of him. The receiver in this play is usually a running back or fullback, although wide receiver and tight end screens are sometimes employed.
when the hand-off to a running back is faked but a pass is made to another player behind the line of scrimmage, often used when the defensive team are planning a blitz
A short, quick pass dumped off to a running back in which he has offensive linemen blocking for him.
A screen pass, or a "shuttle pass" (usually back-handed) is a type of "trick play" in American football, much like a draw. During a screen pass, many things are going on at the same time in order to fool the defense into thinking a long pass is being thrown, when in fact the pass is merely a short one, just beyond the defensive linemen. Screens are usually deployed against aggressive defenses that rush the passer.