Source : Webster's Revised Unabridged Dictionary (1913)

Loiterer \Loi"ter*er\, n.
   1. One who loiters; an idler.

   2. An idle vagrant; a tramp. [Obs.] --Bp. Sanderson.

Source : WordNet®

loiterer
     n : someone who lingers aimlessly in or about a place [syn: {lingerer}]