Sports term: Of the human male, to be hit squarely in the reproductive organs by a moving object, such as a line drive or a hockey puck. Normally used only in the past tense, as it connotes accidental contact - one should never set out to "square that guy," as it would be the ultimate in poor sportsmanship.
Usually the victim will double over and gasp for breath, with watering eyes. It is customary for the victim, when asked where he is injured, to point to some other part of the body, such as the foot.
Usage :"Ooh, looks like Roberto Alomar was really squared on that one, Charlie. He'll have to hop up and down for a while."