noun.
1. Water flowing in from behind.
noun.
Water thrown back by the turning of a water-wheel or the paddles of steamboats, etc.
noun.
Water held or forced back, as in a mill-race or in a tributary stream, in consequence of some obstruction, as a dam or flood.
noun.
An artificial accumulation of water obtained at high tide and reserved in reservoirs, to be discharged at low tide for clearing off deposits in channel-beds and tideways.
noun.
A creek or arm of the sea which runs parallel to the coast, having only a narrow slip of land between it and the sea, and communicating with the latter by barred entrances.