(STOP WORK). US informal. to stop doing your work or a similar activity for a period of time: As it's Friday, I think I'll sign off early today.

7 meanings: 1. to announce the end of a radio or television programme 2. bridge to make a conventional bid indicating to one's.

cease broadcasting; get off the air; as of radio stations. cease, discontinue, give up, lay off, quit, stop. put an end to a state or an activity.

noun · the act or fact of signing off. · personal approval or authorization; endorsement.

to formally approve or agree to something: The CEO personally signs off on every senior promotion.

​to end a broadcast by saying goodbye or playing a piece of music. sign something off. ​to give your formal approval to something, by signing your name.

sign off · to write one's signature, as a token of agreement, obligation, receipt, etc.:to sign for a package. · to make a sign or signal:He signed to her to go ...

From Longman Dictionary of Contemporary Englishsign off phrasal verb1 informal to end a radio or television programme by saying goodbye2 SIGN YOUR NAMEto write ...

[usually singular] ​the ending of a letter or broadcast. He ended each broadcast with his trademark sign-off.