square deal definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Informal any dealing that is honest and fair
square deal - Phrases/Idioms
A just, equitable arrangement or transaction, as in I know I'll get a square deal if I work with that supplier. This idiom uses square in the sense of “fair” or “honest,” a usage dating from the 1300s. [Late 1800s]