[ground rule] n (1890) 1: a sports rule adopted to modify play on a particular field, court, or course
2: a rule of procedure "ground rules for selecting a superintendent --Amer. School Board Jour."
[ground rule] n (1890) 1: a sports rule adopted to modify play on a particular field, court, or course
2: a rule of procedure "ground rules for selecting a superintendent --Amer. School Board Jour."
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012