The Collaborative International Dictionary of English v.0.48:
Loiterer \Loi"ter*er\, n. 1. One who loiters; an idler. [1913 Webster] 2. An idle vagrant; a tramp. [Obs.] --Bp. Sanderson. [1913 Webster]WordNet (r) 3.0 (2006):
loiterer n 1: someone who lingers aimlessly in or about a place [syn: loiterer, lingerer]