Meaning of ENQUIRY in English

ENQUIRY

UK dated and US inquiry [noun]I've been making enquiries about/into the cost of a round-the-world ticket. [C]Enquiry into the matter is pointless - no one will tell you anything. [U]An enquiry is also an official attempt to discover the facts about something.a judicial enquiryBefore the council starts building the new development, they will have to hold a public enquiry.

Cambridge English vocab.      Кембриджский английский словарь.