coupler Hear it!

coupler definition

cou·pler (kup′lər)

noun

a person or thing that couples; specif.,
  1. a device for coupling two railroad cars
  2. a device on an organ connecting two keyboards or keys an octave apart so that they can be played together

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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