nipple

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nipple

1. the small conical projection in the centre of the areola of each breast, which in women contains the outlet of the milk ducts
2. a small drilled bush, usually screwed into a bearing, through which grease is introduced
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Nipple

 

a threaded metal connecting pipe used to achieve a tight connection of a coupling to a pipeline by means of a coupling nut. Nipples are used to connect pipelines and components of instruments and machines. Nipples with outside thread are used to assemble radiators for central heating systems. The parts used to fasten the spokes to the rim of a bicycle wheel are also called nipples.

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

nipple

[′nip·əl]
(anatomy)
The conical projection in the center of the mamma, containing the outlets of the milk ducts.
(design engineering)
A short piece of tubing, usually with an internal or external thread at each end, used to couple pipes. Also known as bushing.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

nipple

nipple
A short length of pipe with threads at each end; used to join couplings or fittings.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

nipple

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References in periodicals archive ?
* Moulded Parts * Gaskets * PTFE * Grease Guns * Grease Nipples
Formulated for improved penetration and water repellence, Omnigliss is suitable for frictional contacts running at low to medium speeds which are not equipped with grease nipples or oiling holes.