= news agency, n. 2.

an organization which collects and supplies news items, usually to subscribers; (also) the facility provided by such an organization.

An organization that collects news items and distributes them to subscribing newspapers, broadcasters, etc.

A telegraph wire via which syndicated news is teleprinted; (hence) a news service which uses such a device. In later use also: a service which…

(originally) a telegraph service; (now chiefly) a news agency that supplies syndicated news to its subscribers (cf. newswire, n. 2).