noun
a stream in which the effects of the tide extend far upstream
• Syn: ↑tidewater river, ↑tidal stream, ↑tidewater stream
• Hypernyms: ↑stream, ↑watercourse
• Part Holonyms: ↑tidewater
* * *
noun : a river up the course of which the tides are noticeable for a considerable distance
Useful english dictionary. 2012.