sign out

Verb

sign out (third-person singular simple present signs out, present participle signing out, simple past and past participle signed out)

1. (intransitive) To sign one's name as an indication that one is leaving some location; to take some action to indicate one is leaving a secured program or web page on a computer.
   • He was the last person to sign out of the building that night.
   • After making the necessary edits, always sign out of the system.

   Synonyms:

   log off, log out, sign off

   Antonyms:

   log in, log on, sign in, sign on

2. (especially, transitive) To remove (something) and take (it) into one's possession, having registered or signed for it in some way as a record of possession and a promise to return it (e.g., by your signature or log-in credentials).
   • If you want to take a book home from the library, you must sign it out.
   • To sign out a book, you must present your library card to the clerk.
3. To signal.
4. (sign language) To say something through sign language.