To try to ascertain a person's point of view, or the nature of a situation, by cautious and subtle means.
To question or call into doubt.
To ask a question.
To send a private message to (a user on IRC).
To send out a query letter.
To pass a set of instructions to a database to retrieve information from it.
To ask, inquire.
A question mark.
A question, an inquiry (US), an enquiry (UK).
A set of instructions passed to a database.