stamp (stămp) v. stamped, stamp·ing, stampsv.tr.1. To bring down (the foot) forcibly.2. To bring the foot down onto (an object or surface) forcibly.3. To cause to be dislodged by stomping the feet: He stamped the snow from his boots. Am I missing something? Where was the stamp? Where was the force? Where was the intention? He jumped and gravity pulled him to the ground... Stamping is bring your foot up and forcing it down on to someone, looking where you're going to hit them, knowing you're doing it. Costa done none of those. He didn't stamp. Christ.