Nouns

(n)litterthe offspring at one birth of a multiparous mammal
(n)litterrubbish carelessly dropped or left about (especially in public places)
(n)litterconveyance consisting of a chair or bed carried on two poles by bearers
(n)bedding material, bedding, littermaterial used to provide a bed for animals

Verbs

(v)litterstrew“Cigar butts littered the ground”
(v)littermake a place messy by strewing garbage around
(v)littergive birth to a litter of animals