A wound that keeps shaping behaviour long after the event. Trauma is not the memory — it is what the body learned and never unlearned.
Greek trauma (a wound), from the root of titroskein (to wound), named an injury that goes on shaping the body long after the blow that caused it.
A wound that goes on shaping behaviour long after the event that caused it, not the memory itself but what the body learned and never unlearned.