noun
[ U , sing. ] an area of land between the borders of two countries or between two armies, that is not controlled by either
noun
[ U , sing. ] an area of land between the borders of two countries or between two armies, that is not controlled by either
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005