The Collaborative International Dictionary of English v.0.48:
Slobberer \Slob"ber*er\, n. 1. One who slobbers. [1913 Webster] 2. A slovenly farmer; a jobbing tailor. [Prov. Eng.] [1913 Webster]WordNet (r) 3.0 (2006):
slobberer n 1: a person who dribbles; "that baby is a dribbler; he needs a bib" [syn: dribbler, driveller, slobberer, drooler]