(acting) A person in a play or movie with a minimal part; an extra. / (idiomatic, by extension) One who serves in a subordinate or menial role.

(telecommunications) The generic designator for several digitally multiplexed signal carrier systems.

(military, nautical, aviation) A general purpose aircraft carrier, used in a variety of ways (hence 'general purpose', "GP" or jeep), such as aircraft transport ship, invasion support airstrip, ocean patrol airstrip, fleet/convoy defense airstrip. They were used to alleviate demands made on fleet carriers which have higher levels of defensive capabilities and underway speeds able to keep up with the battle fleet.

(transport, rail transport) a person or company that undertakes to transport goods for the general public or passengers on regular routes at agreed rates.

plural of carrier set

plural of carrier shell

Alternative form of water carrier

(usually historical) A person who carries water from a spring or well, especially in antiquity and pre-modern era when it was a common job.

Alternative form of spear carrier

Any marine snail of the family Xenophoridae, which cements stones and shell fragments to its own shell.