Noah Webster
External
EXTERN'AL, adjective [Latin externus.]
1. Outward; exterior; as the external surface of a body; opposed to internal.
2. Outward; not intrinsic; not being within; as external objects; external causes or effects.
3. Exterior; visible; apparent; as external deportment.
4. Foreign; relating to or connected with foreign nations; as external trade or commerce; the external relations of a state or kingdom.
External taxes, are duties or imposts laid on goods imported into a country.