I. ˈ ̷ ̷| ̷ ̷ noun
: an act or instance of warding off a football tackler with the arm fully extended from the shoulder, elbow locked, and the palm of the hand placed firmly against any part of his body — called also stiff-arm
II. transitive verb
1. : to ward off (an opponent) with or as if with a straight-arm
2. : to clear (a passage) by using a straight-arm
intransitive verb
: to use a straight-arm in warding off an opponent