back in rightglossary / BACK-IN RIGHT back-in right. Oil & gas. A reversionary interest in an oil-and-gas lease entitling an assignor to a share of the working interest after the assignee has recovered specified costs from production. 词条贡献者 法律翻译David,毕业于美国顶尖的高级翻译学院,专注翻译各类与电子证据开示与文件保全有关的法律文件。