n. One who or that which carries or conveys.n. Specificallyn. One who for hire undertakes the conveyance of goods or persons.n. A carrier-pigeon.n. One who manages or arranges affairs.n. In machinery: A piece of iron fixed by a setscrew on the end of a shaft or spindle to be turned in a lathe, or to a mandrel on which a round object is driven for the purpose of being turned; a lathe-dog. A projection in the center-chuck or face-plate drives the carrier around.n. The distributing-roller of a carding-machine.n. A roller between the drum and the feeding-rollers of a scribbling-machine, for spinning wool.n. In a braiding-machine, a spool- or bobbin-holder which follows in a curved path intersecting the paths of other bobbins, and so lays up the thread into a braid.n. A hoist, as the mold-carrier in sugar-works.n. (f ) Part of the breech-action of a magazine-gun. See carrier-ring.n. An oyster that will bear transportation well.An old spelling of career.n. In transportation, a system of endless traveling-chains supporting slats, trays, or buckets, used in transporting various materials or articles in bulk or in packages over short distances, as in a factory.