Source : Webster's Revised Unabridged Dictionary (1913)

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

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

Source : WordNet®

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