skitnica

1. tramp; vagrant
   U parku je spavao neki skitnica. — Some tramp was sleeping in the park.
2. colloq. (of a person, animal) wanderer; rover
   Naš mačak je pravi skitnica, stalno nestaje. — Our cat is a real wanderer, always disappearing.

Declined like nouns in -a; when referring to a man, it can take either masculine or feminine agreement: taj skitnica or ta skitnica.