Definitions

1. noun

A sign or token, especially one serving as a symbol or emblem.

“The ancient civilization used the signum of a lion on their coins.”

2. noun

A Roman military standard or emblem, typically a metal object carried by soldiers into battle.

“The Roman legion carried the signum of their commander into battle.”

3. noun

A token or badge, especially one given as a reward or recognition.

“The charity gave a signum of appreciation to its volunteers.”