Meaning of “enquiry” - Learner’s Dictionary

enquiry

noun UK (UK/US inquiry) uk us /ɪnˈkwaɪəri/
QUESTION [ C ] formal

B1 a question that you ask when you want more information:

We receive a lot of enquiries about tax issues.
OFFICIAL PROCESS [ C ]

an official process to discover the facts about something bad that has happened:

The hospital is holding an enquiry into the accident.
ASKING QUESTIONS [ U ] formal

(Definition of “enquiry” from the Cambridge Learner’s Dictionary © Cambridge University Press)