WORKHORSE
Meaning of WORKHORSE in English
/ ˈwɜːkhɔːs; NAmE ˈwɜːrkhɔːrs/ noun
a person or machine that you can rely on to do hard and/or boring work
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005