ground ruleBrE /ˈɡraʊnd ruːl/ 🔊NAmE /ˈɡraʊnd ruːl/ 🔊 nounground rules [plural] the basic rules on which sth is based 基本原则；基本准则◆The new code of conduct lays down the ground rules for management-union relations. 新的行为规范确定了资方与工会关系的基本原则。🔊🔊 [countable] (NAmE, sport 体育) a rule for the playing of a game on a particular field, etc. （某一体育运动场地等的）比赛规则