break the ice

break the ice idiom
  1. Make a start, pave the way, as in Newton's theories broke the ice for modern physics. This idiom alludes to breaking ice in a channel so that a ship can pass. [Early 1600s] Also see break ground.
  2. Relax a tense or very formal situation, as in Someone at the conference table will have to break the ice. [Early 1600s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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