Evidence or indication that something exists or will happen

• An omen or clue about a future event

A board or display bearing a message, notice, or direction

• A road or shop sign

A mark or symbol that represents something

• A mathematical sign such as + or −

A gesture used to communicate meaning

• A unit in sign language equivalent to a word

An astrological sign of the zodiac

To write one's name on something to validate or agree

• To sign a document

To enter into a contract for work or services

• To sign a player, artist, or employee

To communicate using gestures or sign language

• To signal to someone by making signs

To provide a place or road with signs

• To put up signposts or labels