/in dish"ee euh/ , n.pl., sing. indicium .
1. a postal marking used rather than a stamp or a regular cancellation on each item in a large shipment of prepaid mail.
2. Often, indicium .
a. a printed message or instruction, esp. one stamped on a package: an indicium of "bulk mail."
b. an indication or token.
[ 1615-25; indicium INDICIUM ]