plural of signing

present participle of sign

The act of concluding a contract, especially by an athlete or entertainer with a company. / (by extension) A player signed by a sporting organization.

present participle of sign on

present participle of sign in

plural of at sign

plural of at-sign

(broadcasting) The time of day when a radio or television station begins broadcasting, usually after being off the air for several hours. / Alternative form of sign-on

Alternative form of at sign

The symbol @, most commonly used in e-mail addresses.