pisar
/piˈsaɾ/ · B1 · verb
to step
👣👟 pisar is what you do to the piso (floor): you step on it
From Latin pinsare, to pound or crush, so feet pounding the ground. Its cousin piso means floor, the thing you tread on. No pisar el césped means keep off the grass. It is also vulgar slang for having sex.