Definitions
1.nounA question, an inquiry (US), an enquiry (UK)."The teacher answered the student’s query concerning biosynthesis."
2.nounA question mark.
3.nounA set of instructions passed to a database."The database admin switched on query logging for debugging purposes."
4.verbTo ask a question.
5.verbTo ask, inquire.
6.verbTo question or call into doubt.
7.verbTo pass a set of instructions to a database to retrieve information from it.
8.verbTo send a private message to (a user on IRC).
9.verbTo send out a query letter.