operate

(intransitive, transitive) To perform a work or labour; to exert power or strength, physical or mechanical; to act.
(intransitive) To produce an effect.
(intransitive) To produce an effect.
(intransitive) To produce an effect.
(transitive) To bring about as an effect; to cause.
(intransitive, transitive) To perform some manual act upon a human body in a methodical manner, and usually with instruments, with a view to restore soundness or health, as in amputation, lithotomy, etc.
(intransitive, transitive) To deal in stocks or any commodity with a view to speculative profits.
(transitive) To put into, or to continue in, operation or activity; to work.