Englishsign inverbMeaningTo sign one's name on a list when entering a place, to indicate one's arrival.To take some action to access a secured program or web page on a computer; to log in.Related wordscheck in(English)sign on(English)sign up(English)sign into law(English)sign into(English)undersign(English)subscribe(English)register(English)SourcesDictionaryAPI.dev English dictionary data