Pauper

Noun

 * 1) One who is extremely poor.
 * 2) One living on or eligible for public charity.

Thesaurus
almsman, almswoman, bankrupt, beggar, break, bum, bust, casual, charity case, down-and-out, down-and-outer, fold up, hardcase, hobo, impoverish, indigent, insolvent, lazarus, mendicant, pauperize, penniless man, poor devil, poor man, poorling, starveling, tramp, vagrant, welfare client