The Collaborative International Dictionary of English v.0.48:

Roomer \Room"er\, n.
   A lodger. [Colloq.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Roomer \Room"er\, adv. [See Room, a.]
   At a greater distance; farther off. [Obs.] --Sir J.
   Harrington.
   [1913 Webster]

WordNet (r) 3.0 (2006):

roomer
    n 1: a tenant in someone's house [syn: lodger, boarder,
         roomer]