To summon (someone) to report for military service.
To select e.g. to a sports squad.
To retrieve from personal or computer memory.
To call on the telephone.
An order to report for military service.
To join something, after signing.
To begin broadcasting a radio or television signal, usually at the beginning of a broadcasting day and after being off the air for several hours.
To commit oneself, as to a project, a goal, an organization, a cause.
To apply to receive unemployment benefits.
To log on; to start using a computer, radio, etc., or to start talking.
The time of day when a radio or television station begins broadcasting, usually after being off the air for several hours.