A tributary (of a river). Obsolete.

As part of a river or river-system. In U.S., Canada, Australia, New Zealand, etc.: A branch of a main river, a tributary river; a rivulet, brook…

A stream, ‘creek’, or tributary river: so called in parts of North America originally settled by the Dutch (esp. in place-names, as Schuylkill).

Usually as two words or with hyphen. A tributary stream or subsidiary current. Also figurative.

A stream which flows into another body of water; a tributary; also attributive, as feeder-stream.

transferred and figurative. One who or that which furnishes subsidiary supplies or aid. spec. A stream contributing its flow to a larger stream…

A stream flowing into a larger stream or lake; a tributary stream; a feeder. Cf. effluent, n. a.

A stream which unites and flows with another: properly applied to streams of nearly equal size; but sometimes loosely used for affluent, i.e. a…

A smaller or subordinate river adjoining a larger one; a tributary.

A river or stream which flows into another or into a lake; a tributary, an affluent.