courier

Concise Oxford English Dictionary © 2008 Oxford University Press:
courier /ˈkʊrɪə/

▶noun

• 1 a messenger who transports goods or documents.

• 2 chiefly Brit. a person employed to guide and assist a group of tourists.

▶verb send or transport by courier.

– origin ME: orig. from OFr. coreor; later from Fr. courier (now courrier), from Ital. corriere; based on L. currere ‘to run’.