MAINSTAY


Meaning of MAINSTAY in English

/ ˈmeɪnsteɪ; NAmE / noun

[ usually sing. ] mainstay (of sth) a person or thing that is the most important part of sth and enables it to exist or be successful :

Cocoa is the country's economic mainstay.

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