Subbasin

noun
1.
a circular container with a greater width than depth, becoming smaller toward the bottom, used chiefly to hold water or other liquid, especially for washing.
2.
any container of similar shape, as the pan of a balance.
3.
the quantity held by such a container:
We need another basin of water to dilute the mixture.
4.
a natural or artificial hollow place containing water.
5.
a partially enclosed, sheltered area along a shore, often partly man-made or dredged to a greater depth, where boats may be moored:
a yacht basin.
6.
Geology. an area in which the strata dip from the margins toward a common center.
7.
Physical Geography.

a hollow or depression in the earth’s surface, wholly or partly surrounded by higher land:
river basin.
drainage basin.

8.
Botany. the depression in an apple, pear, or other pome at the end opposite the stem.
noun
1.
a round container open and wide at the top with sides sloping inwards towards the bottom or base, esp one in which liquids are mixed or stored
2.
Also called basinful. the amount a basin will hold
3.
a washbasin or sink
4.
any partially enclosed or sheltered area where vessels may be moored or docked
5.
the catchment area of a particular river and its tributaries or of a lake or sea
6.
a depression in the earth’s surface
7.
(geology) a part of the earth’s surface consisting of rock strata that slope down to a common centre
basin
(bā’sĭn)

A region drained by a river and its tributaries.

A low-lying area on the Earth’s surface in which thick layers of sediment have accumulated. Some basins are bowl-shaped while others are elongate. Basins form through tectonic processes, especially in fault-bordered intermontane areas or in areas where the Earth’s crust has warped downwards. They are often a source of valuable oil.

An artificially enclosed area of a river or harbor designed so that the water level remains unaffected by tidal changes.

or Bason. (1.) A trough or laver (Heb. aggan’) for washing (Ex. 24:6); rendered also “goblet” (Cant. 7:2) and “cups” (Isa. 22:24). (2.) A covered dish or urn (Heb. k’for) among the vessels of the temple (1 Chr. 28:17; Ezra 1:10; 8:27). (3.) A vase (Heb. mizrak) from which to sprinkle anything. A metallic vessel; sometimes rendered “bowl” (Amos 6:6; Zech. 9:15). The vessels of the tabernacle were of brass (Ex. 27:3), while those of the temple were of gold (2 Chr. 4:8). (4.) A utensil (Heb. saph) for holding the blood of the victims (Ex. 12:22); also a basin for domestic purposes (2 Sam. 17:28). The various vessels spoken of by the names “basin, bowl, charger, cup, and dish,” cannot now be accurately distinguished. The basin in which our Lord washed the disciples’ feet (John 13:5) must have been larger and deeper than the hand-basin.