used to refer to a spacecraft, or a place where military guards work, that has no people present to operate or be in charge of it

to take control of an aircraft or other vehicle during a journey, especially using violence

a group of computers that are controlled by software containing harmful programs, without their users' knowledge

to speak too proudly about what you have done or what you own

a piece of information that is sent from one computer to another to check that a user is who they claim to be or to allow someone to see information

in or from the air, especially from an aircraft

a machine that turns a container round very quickly, causing the solids and liquids inside it to separate by centrifugal action

to accept that you will reduce your demands or change your opinion in order to reach an agreement with someone

a small plastic card that can be used as a method of payment

to persuade someone to do something