plural of road user

Agent noun of re-use; one who re-uses.

(economics) A fee for government-provided goods or services, charged to the user.

plural of user name

Alternative spelling of superuser

plural of user interface

plural of user control

(graphical user interface) A control created by a developer, usually by combining other controls, often intended for use in a specific application.

plural of user group

(computing) A set of users grouped together on a system for administrative purposes. / (computing) A community of users of a particular machine, operating system, etc.