'litterbug' definitions:

Definition of 'litterbug'

From: WordNet
noun
A person who litters public places with refuse [syn: litterer, litterbug, litter lout]

Definition of 'litterbug'

From: GCIDE
  • litterbug \lit"ter*bug`\ (l[i^]t"t[~e]r*b[u^]g), n. a person who litters public places with refuse.
  • Syn: litterer, litter lout. [WordNet 1.5]