2019-01-20 token n.

1. a thing serving as a visible or tangible representation of someting abstract.
2. a thing given to or done for someone as an expression of one's feelings.
3. a characteristic or distinctive sign or mark, especially a badge or favour worn to indicate allegiance to a particular person or party.
4. a sequence of bits used in a certain network architecture in which the ability to transmit information is conferred on a particular node by the arrival there of this sequence,which is passed continuously between nodes in a fixed order.