zgniatać

Etymology
From.

Verb

 * 1)  to squash, to squish, to crush
 * 2)  to crumple, to crease
 * 3)  to crush to death
 * 4)  to extinguish, to quell, to put down
 * 5)  to become squashed, to become crushed
 * 6)  to become crumpled, to become creased