drain

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drain

1. a pipe or channel that carries off water, sewage, etc.
2. Surgery a device, such as a tube, for insertion into a wound, incision, or bodily cavity to drain off pus, etc.
3. Electronics the electrode region in a field-effect transistor into which majority carriers flow from the interelectrode conductivity channel
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Drain

A channel, conduit, or pipe used to remove rain, wastewater, or sewage.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Drain

 

an artificial underground channel (pipe, cavity) for collecting and discharging subsoil waters and for aerating soil. Drains differ according to function (driers, collecting mains), structure, and materials. Pipes are made of such materials as earthenware, wood, and plastic. Cavities are of the mole or the slotted type, filled with gravel or fascines.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

drain

[drān]
(civil engineering)
A channel which carries off surface water.
A pipe which carries off liquid sewage.
(electricity)
(electronics)
The region into which majority carriers flow in a field-effect transistor; it is comparable to the collector of a bipolar transistor and the anode of an electron tube.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

drain

1. Any pipe in a building-drainage system which carries waste water or water-borne waste.
2. Any pipe or channel for carrying waste water or storm water.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

drain

(jargon)
(IBM) To allow a system to complete the processing of its current work before the system becomes unavailable. E.g. draining a device before taking it off-line or telling a web server in a server farm not to accept any new requests but to finish processing any requests it has already accepted.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

drain

One side of a field effect transistor. When the gate is pulsed, current flows from the source to the drain, or vice versa depending on the design. See collector.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
The Mayor said storm water drains converted into sewerage drains
Historically, large-bore chest drains have been in use as a first-line intervention in the management of pleural disease.
There are several techniques described for the prevention, confirmation, and management of retained surgical drains.
This unique plumbing tool changes the way that people traditionally approach clogged & slow-running drains, while simultaneously having a significant impact on the well-being of both the environment and the water systems.
Among these, 274 (64.5%) of thyroidectomy and 48 (26.5%) parathyroidectomy patients had neck drains inserted.
Most surgeons insert drain at the completion of thyroidectomy to prevent the collection of fluid in the dead space, however the use of drains is a controversial topic2.
1.Unclogging the drain - Remove the food debris left in the kitchen sink drain.
These upstream drains are capable of draining the upstream slope and making the equipotential lines tend to become horizontal.
The DM said that if the drains remain clean, only then can people expect to be healthy.
With the fear of monsoon-related floods looming large across the country, rain drains in Karachi, Lahore and Peshawar require cleaning.
The chief minister said that the natural waterways in both Karachi and Hyderabad had been encroached upon; therefore rainwater could not pass through storm-water drains.