(US) A question, an inquiry , an enquiry .

A question mark.

(computing, databases) A set of instructions passed to a database.

(intransitive) To ask a question.

(transitive) To ask, inquire.

(transitive) To question or call into doubt.

(computing, databases) To pass a set of instructions to a database to retrieve information from it.

(transitive, Internet) To send a private message to (a user on IRC).

(intransitive, publishing) To send out a query letter.