Source : Webster's Revised Unabridged Dictionary (1913)

Frump \Frump\, v. t. [Cf. Prov. E. frumple to wrinkle, ruffle,
   D. frommelen.]
   To insult; to flout; to mock; to snub. [Obs.] --Beau. & Fl.

Frump \Frump\, n.
   1. A contemptuous speech or piece of conduct; a gibe or
      flout. [Obs.] --Beau. & Fl.

   2. A cross, old-fashioned person; esp., an old woman; a
      gossip. [Colloq.] --Halliwell.

Source : WordNet®

frump
     n : a dull unattractive unpleasant girl or woman; "she got a
         reputation as a frump"; "she's a real dog" [syn: {dog}]