Original: Shorts are a garment worn by both men and women over their pelvic area, circling the waist, and covering the upper part of the upper legs or more, sometimes extending as far as the knee, but not covering the entire length of the leg, either as outer or undergarment.
Simplified: Shorts are a sort of trousers or pants worn by both men and women that reach only to the upper part of the legs or more, but don't cover the entire length of the leg.