Usually ground rules. basic or governing principles of conduct in any situation or field of endeavor: the ground rules of press conferences.
Sports. any of certain rules specially adopted, as in baseball and softball, for dealing with situations or circumstances arising chiefly from the particular nature of the playing area or the interference of spectators.
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Words nearby ground rule
Origin of ground rule
An Americanism dating back to 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for ground rule
a procedural rule or principle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012