abollado

adj. dented; bruised; embossed

v. dent, make a hollow depression; bruise, make a contusion; emboss, decorate with a design which is raised above a surface; (Mexico) blunt, make less sharp or intense

v. become dented; get bruised

= crumple.
Ex: There is a tendency for smaller items to be pushed to the back of the drawer and possibly crumpled as the drawer is opened and closed = Lo normal es que las cosas más pequeñas se vayan desplazando hacia la parte trasera del cajón y que posiblemente se arrugen al abrir y cerrarlo.