an object, quality, or event whose presence or occurrence indicates the probable presence or occurrence of something else

flowers are often given as a sign of affection

the shops are full, which is a sign that the recession is past its worst

the signs are that counterfeiting is growing at an alarming rate

a gesture or action used to convey information or an instruction

she gave him the thumbs-up sign

a notice on public display that gives information or instructions in a written or symbolic form

I didn't see the ‘Stop’ sign

each of the twelve equal sections into which the zodiac is divided, named from the constellations formerly situated in each, and associated with successive periods of the year according to the position of the sun on the ecliptic

a sign of the zodiac

a person born under the sign of Virgo

the positiveness or negativeness of a quantity

the last four bits hold a pattern to represent the sign of the number

write one's name on (a letter, card, document, etc.) to identify oneself as the writer or sender

the card was signed by the whole class

use gestures to convey information or instructions

she signed to her husband to leave the room

indicate with signposts or other markers

the footpath is signed by the gate

mark or consecrate with the sign of the cross

he signed himself with the cross