'Riffraff' definitions:

Definition of 'riffraff'

From: WordNet
noun
Disparaging terms for the common people [syn: rabble, riffraff, ragtag, ragtag and bobtail]

Definition of 'Riffraff'

From: GCIDE
  • Riffraff \Riff"raff`\, n. [OE. rif and raf every particle, OF. rif et raf. CF. Raff, and 1st Rifle.] Sweepings; refuse; the lowest order of society. --Beau. & Fl. [1913 Webster]