"What's the plural of query?"

The plural of query is queries.

Definition of query:

A query is a question or request for information or clarification.

Single Examples:
1. She submitted a query to the customer support team regarding her order.
2. He posed a query to the panel of experts during the conference.
3. The journalist conducted interviews to gather information for her query.
Plural Examples:
1. They received multiple queries from customers seeking assistance.
2. The database stores a vast number of queries from users.
3. She analyzed the data to identify patterns in users' search queries.