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==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] grove pit, [[cave]], from Middle Dutch ''groeve''; akin to Old High German ''gruoba'' pit, cave, [http://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] ''grafan'' to dig
*[http://en.wikipedia.org/wiki/17th_century 1659]
==Definitions==
*1: a long narrow [[channel]] or depression
*2a : a fixed [[routine]] : rut
:b : a situation suited to one's [[abilities]] or interests : niche
*3: top form <a great talker when he is in the groove>
*4: the middle of the strike zone in baseball where a pitch is most easily hit <a fastball right in the groove>
*5: an enjoyable or exciting [[experience]]
*6: a pronounced enjoyable [[rhythm]]
==Description==
In [[manufacturing]] or [http://en.wikipedia.org/wiki/Mechanical_engineering mechanical engineering] a '''groove''' is a long and narrow indentation built into a [[material]], generally for the [[purpose]] of allowing another material or part to move within the groove and be [[guided]] by it. Examples include:

*A canal cut in a hard material, usually metal. This canal can be round, oval or an arc in order to receive another component such as a boss, a tongue or a gasket. It can also be on the [[circumference]] of a dowel, a bolt, an axle or on the outside or inside of a tube or pipe etc. This canal may receive a circlip an o-ring or a gasket.
*A depression on the entire circumference of a cast or machined wheel, a pulley or sheave. This depression may receive a cable, a rope or a belt.
*A longitudinal [[channel]] formed in a hot rolled rail [[profile]] such as a grooved rail. This groove is for the flange on a train wheel.

[[Category: General Reference]]

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