Dictionary

Something serving as an expression of something else.

Example: According to the Bible, the rainbow is a token of God's covenant with Noah.

A keepsake.

Example: Please accept this bustier as a token of our time together.

A piece of stamped metal or plastic, etc., used as a substitute for money; a voucher that can be exchanged for goods or services.

Example: A book token is the easiest option for a Christmas gift.

(sometimes figurative) Evidence, proof; a confirming detail; physical trace, mark, footprint.

To betoken, indicate, portend, designate, denote

To betroth

To symbolize, instantiate