sign

Something that suggests the presence or existence of a fact, condition, or quality.

An act or gesture used to convey an idea, a desire, information, or a command: synonym: gesture.

Sign language.

A displayed structure bearing lettering or symbols, used to identify or advertise a place of business.

A posted notice bearing a designation, direction, or command.

A conventional figure or device that stands for a word, phrase, or operation; a symbol, as in mathematics or in musical notation.

An indicator, such as a dropping or footprint, of the trail of an animal.

A trace or vestige.