sink (redirected from washbasin)

sinkhole

 or sink or doline

Depression formed as underlying limestone bedrock is dissolved by groundwater. Sinkholes vary greatly in area and depth and may be very large. The two main varieties are those caused by the collapse of a cavern roof, and those caused by the gradual dissolving of rock under a soil mantle. Collapsed sinkholes generally have steep rock sides and may receive streams that then flow underground. Soil-mantled sinkholes are generally shallower; they may become clogged with clay and hold a small lake.

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sink

A device or place that accepts something. See heat sink, data sink and sink device.

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sink

1. an area of ground below that of the surrounding land, where water collects

2. Physics a device or part of a system at which energy is removed from the system

3. Informal (of a housing estate or school) deprived or having low standards of achievement

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sink [siŋk]

(communications)

Equipment at the end of a communications channel that receives signals and may perform other functions such as error detection.

(electromagnetism)

The region of a Rieke diagram where the rate of change of frequency with respect to phase of the reflection coefficient is maximum for an oscillator; operation in this region may lead to unsatisfactory performance by reason of cessation or instability of oscillations.

(geology)

A circular or ellipsoidal depression formed by collapse on the flank of or near to a volcano.

A slight, low-lying desert depression containing a central playa or saline lake with no outlet, as where a desert stream comes to an end or disappears by evaporation.

(mining engineering)

To excavate strata downward in a vertical line for the purpose of winning and working minerals.

To drill or put down a shaft or borehole.

(physics)

A device or system where some extensive entity is absorbed, such as a heat sink, a sink flow, a load in an electrical circuit, or a region in a nuclear reactor where neutrons are strongly absorbed.