'nudnik' definitions:

Definition of 'nudnik'

From: WordNet
noun
(Yiddish) someone who is a boring pest [syn: nudnik, nudnick]

Definition of 'nudnik'

From: GCIDE
  • nudnik \nud"nik\ (n[oo^]d"n[i^]k) n. [Yiddish, fr. Russ. nudnyi tiresome.] a pestiferous boring and dull person. [PJC]