To commit oneself, as to a project, a goal, an organization, a cause.
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 join something, after signing.
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.
To contribute or promise to contribute money to a common fund.
To sign up to have copies of a publication, such as a newspaper or a magazine, delivered for a period of time.
To agree to buy shares in a company.
To pay money to be a member of an organization.
To indicate interest in the communications made by a person or organization.
To believe or agree with a theory or an idea (used with to).
To pay for the provision of a service, such as Internet access or a cell phone plan.
To register for notifications about an event or similar.
To sign; to mark with one's signature as a token of consent or attestation.
To promise to give, by writing one's name with the amount.