An artificial channel that is constructed to convey water from one location to another.
A structure carrying water over a river or depression, especially in regards to ancient aqueducts.
A structure conveying fluid, such as the cerebral aqueduct or vestibular aqueduct.
A signal such as radio, sound, or light that is modulated to transmit information.
A piece which communicates to an object in a lathe the motion of the faceplate; a lathe dog.
A movable piece in magazine guns which transfers the cartridge to a position from which it can be thrust into the barrel.
A person or other organism that has a genetic trait, mutation or infection liable to cause a disease, but displays no symptoms.
A liquid or gas used as a medium for another substance.
A catalyst or other intermediary in a chemical reaction.
A certified airline.
A charge carrier.
A mobile network operator; wireless carrier.
A movable piece in a planetary gear train.
A person or company in the business of shipping freight.
A carrier pigeon.
A person or object that carries someone or something else.
A spool holder or bobbin holder in a braiding machine.