carrier

"aircraft carrier"

"The boy trained his carrier pigeon to deliver messages from school to his home. "

"The shipping carrier delivered the package to my house today. "

"The radio waves are the carrier for the school's announcements. "

"My phone plan is with a major carrier. "

"My aunt works for a major carrier, flying passengers all over the world. "

"The train is a common carrier for commuters to get to work. "

"The protein acted as a carrier in the enzyme-catalyzed reaction, speeding up the breakdown of sugar in my body. "

"My sister is a carrier of the cystic fibrosis gene, but she has never shown any symptoms. "

"Electrons are the charge carriers in a wire, allowing electricity to flow. "

"inert carrier gas, which transports a chemical reactant"