Meaning of EARTHWORK in English

EARTHWORK

/ ˈɜːθwɜːk; NAmE ˈɜːrθwɜːrk/ noun

[ usually pl. ] a large bank of earth that was built long ago in the past and used as a defence

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.