send in

send in idiom
  1. Cause to be dispatched or delivered, as in Let's send in a letter of protest to the hiring committee. [Early 1700s]
  2. Cause someone to become involved in a particular undertaking, as in This disagreement is serious; it's time to send in the lawyers, or In the final few minutes the coach sent in Richard on right wing. [Mid-1800s]

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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