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Meaning of icebreaker

ice•break•er

Pronunciation: (īs'brā"kur), [key]
— n.
  1. a ship specially built for breaking navigable passages through ice.
  2. an opening remark, action, etc., designed to ease tension or relieve formality: A mild joke can be a good icebreaker.
  3. a tool or machine for chopping ice into small pieces.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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