to press down, crush, or injure (something) by treading, or as if by treading
to tread heavily so as to bruise, crush, or injure something
Don't trample on the flower beds
(usu + on/over/upon) to inflict injury with ruthlessness or contempt
trampling on the rights of others
trampler noun
[Middle English tramplen, frequentative of trampen: see tramp1]