The word "carrier" refers to someone or something that carries or transports goods, people, or information from one place to another. Carriers can be individuals like delivery personnel, or they can be vehicles like trucks, ships, or airplanes. Additionally, in medical contexts, a "carrier" may refer to a person who harbors and can transmit a disease without showing symptoms themselves.
The term "carrier" originates from the Middle English word "carriere," which comes from the Old French "carriere" (to carry) and is derived from the Latin "carriāre," meaning "to transport."