crank up

crank up idiom
  1. Get started, as in The theater season is cranking up with four benefit performances. This expression transfers the literal sense of crank, “operate a motor by turning a crank,” to starting any activity. [Slang; 1930s]
  2. Stimulate or intensify one's efforts. For example, We've got to crank up enthusiasm for this new product, or Close to the election the campaign really cranked up. [Slang; mid-1900s]

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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