(American football) A zone between the defensive line of scrimmage and the offensive line of scrimmage.

(historical) A former area between Saudi Arabia and Iraq, abolished 1991.

plural of neutral zone

(American football) an infraction in which a football player, on defense, gets into or crosses the neutral zone during the snap, causing an offensive player to false start. The penalty is against the defense, not the offense. It is a 5 yard penalty.

plural of neutral-zone infraction