An individual instance that represents a class; an example.
An eligible man.
A banknote printed for distribution to central banks to aid in the recognition of banknotes from a country other than their own
A sample, especially one used for diagnostic analysis.
A postage stamp sent to postmasters and postal administrations so that they are able to identify valid stamps and to avoid forgeries
Something that guides or marks the way along a figurative journey; a temporary stopping point.
A sign or other marker that indicates the way along a road or trail.