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