litter

To scatter rubbish or unwanted items untidily over an area.

"Tourists often litter the beach with plastic."

A group of young animals born at the same time to one mother.

"The cat had a litter of five kittens."

Absorbent material used in a tray as a toilet for pets.

"Remember to change the cat's litter tray."

Waste material, such as paper or cans, left untidily in public places.

"Please don't drop litter on the pavement."