a messenger, usually traveling in haste, bearing urgent news, important reports or packages, diplomatic messages, etc.
2.
any means of carrying news, messages, etc., regularly.
3.
the conveyance used by a courier, as an airplane or ship.
4.
Chiefly British. a tour guide for a travel agency.
Origin: 1350–1400; < MF cour(r)ier < It corriere, equiv. to corr(ere) to run (< L currere) + -iere < L -ārius-ary; r. ME corour < AF cor(i)our, OF coreor < LL curritor runner; see current, -tor
n. a small-time drug seller; a drug runner; a carrier of contraband. (Drugs.) : The cops can catch the couriers whenever they want. It's the big guys they're after.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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