Толковый словарь английского языка Oxford English Reference - counsellor

n. (US counselor) 1 a person who gives counsel; an adviser. 2 a person trained to give guidance on personal, social, or psychological problems (marriage guidance counsellor). 3 a senior officer in the diplomatic service. 4 a (also counselor-at-law) US a barrister. b (also counsellor-at-law) Ir. an advising barrister. Phrases and idioms Counsellor of State Brit. a temporary regent during a sovereign's absence. Etymology: ME f. OF conseiller (f. L consiliarius), conseillour, -eur (f. L consiliator): see COUNSEL