usisavati

1. to vacuum; to hoover
   Subotom obično usisavam ceo stan. — On Saturdays I usually vacuum the whole flat.
   Nemoj da usisavaš dok beba spava. — Don't vacuum while the baby is sleeping.
2. (air, liquid, particles) to suck in; to draw in
   Ventilator usisava vazduh iz prostorije. — The fan sucks air out of the room.
   Pumpa usisava vodu iz bunara. — The pump sucks water out of the well.

The appliance is called usisivač.