The Collaborative International Dictionary of English v.0.48:

Indigent \In"di*gent\, a. [L. indigent, L. indigens, p. p. of
   indigere to stand in need of, fr. OL. indu (fr. in- in) + L.
   egere to be needy, to need.]
   [1913 Webster]
   1. Wanting; void; free; destitute; -- used with of. [Obs.]
      --Bacon.
      [1913 Webster]

   2. Destitute of property or means of comfortable subsistence;
      needy; poor; in want; necessitous.
      [1913 Webster]

            Indigent faint souls past corporal toil. --Shak.
      [1913 Webster]

            Charity consists in relieving the indigent.
                                                  --Addison.
      [1913 Webster]

WordNet (r) 3.0 (2006):

indigent
    adj 1: poor enough to need help from others [syn: destitute,
           impoverished, indigent, necessitous, needy,
           poverty-stricken]

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "indigent":
   almsman, almswoman, bankrupt, beggar, beggared, beggarly, bereaved,
   bereft, casual, charity case, deprived, destitute, disadvantaged,
   down-and-out, down-and-outer, flat broke, fleeced, ghettoized,
   hard up, hardcase, impecunious, impoverished, in need, in rags,
   in want, mendicant, necessitous, needy, on relief, out at elbows,
   pauper, pauperized, penniless, penniless man, penurious, poor,
   poor devil, poor man, poorling, poverty-stricken, short,
   starveling, strapped, stripped, underprivileged, welfare client