(idiomatic) To log off; to stop using a computer, radio, etc., especially to stop talking. / (broadcasting) To cease broadcasting a radio or television signal, usually at the end of a broadcasting day.

Having a signature; endorsed. / (mathematics, computer science) Having both positive and negative varieties. / (of a road, route) Furnished with signs and signposts; signposted.

simple past tense and past participle of sign

One who signs or has signed something.

Relating to a seal; used in sealing. / Signing; joining or sharing in a signature.

(arithmetic, informal) A multiplication sign.

a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day

(music) A symbol or numerical sign placed on a stave to indicate the meter; in the case of a numerical time signature, the numerator is the number of beats per bar, the denominator represents the value of each beat

(transitive) To transfer (property or rights) to somebody else by signing a document.

(idiomatic) To sign one's name on a list when entering a place, to indicate one's arrival. / (computing) To take some action to access a secured program or web page on a computer; to log in.