1. Noun.  A short high-pitched humming sound, eg that made by a bullet or vibrating string.
  2. Noun.  Zest or vitality.
  3. Verb.  To move very quickly, ''especially'' while making a high-pitched hum.
  4. Interjection.  (US, slang) Used to acknowledge a witty comeback, a ''zinger''.

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This entry was last updated on RefTopia from its source on 3/20/2012.