dosser
noun
dos·ser ˈdä-sər 
plural dossers
British, informal + often disparaging : a homeless person
An increasing number of young dossers are also using trains parked for the night near Victoria station.
Andrew North
Andrew NorthThe young Scottish painter Peter Howson transforms Glasgow dossers (street people) into heroic figures. Art News
Art News
Word History
Etymology
earlier, "person frequenting a cheap rooming house," from doss entry 1 + -er entry 2
First Known Use
1866, in the meaning defined above