1cou·ri·er 
/ˈkɚrijɚ/ noun
plural cou·ri·ers /ˈkɚrijɚ/ noun [count] 1 : a person whose job is to carry messages, packages, etc., from one person or place to another
▪ A courier [=messenger] will deliver the photo this afternoon. ▪ Police recently arrested a drug courier in our neighborhood. ▪ He worked as a bicycle courier in the city. [=a courier who uses a bicycle] 2 : a business that is used to send messages, packages, etc.
▪ The documents were sent by overnight courier. 3 Brit : a person who is employed by a travel company and whose job is to help people who are on holiday
▪ A courier [=messenger] will deliver the photo this afternoon. ▪ Police recently arrested a drug courier in our neighborhood. ▪ He worked as a bicycle courier in the city. [=a courier who uses a bicycle]
▪ The documents were sent by overnight courier.
