a projecting part, usually rounded, forming the handle of a door, drawer, or the like.
a rounded lump or protuberance on the surface or at the end of something, as a knot on a tree trunk.
Architecture. an ornamental boss, as of carved work.
a rounded hill, mountain, or elevation on a ridge.
verb (used with object), knobbed, knobbing.
to produce a knob on.
to furnish with a knob.
(in stone cutting) to knock off (excess stone) preparatory to dressing; knobble; skiffle.

1350–1400; Middle English knobbe < Middle Low German

knoblike, adjective

knob, nob. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
knob (nɒb)
1.  a rounded projection from a surface, such as a lump on a tree trunk
2.  a handle of a door, drawer, etc, esp one that is rounded
3.  a round hill or knoll or morainic ridge
4.  taboo (Brit) a slang word for penis
5.  informal (Brit) and the same to you with knobs on, and the same to you with brass knobs on the same to you but even more so
vb , knobs, knobbing, knobbed
6.  (tr) to supply or ornament with knobs
7.  (intr) to form into a knob; bulge
8.  taboo (Brit) to have sexual intercourse with (someone)
[C14: from Middle Low German knobbe knot in wood; see knop]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1373, knobe, probably from a Scand. or Ger. source (cf. M.L.G. knobbe "knob," O.N. knyfill "short horn"). Meaning "knoll, isolated round hill" is first recorded 1650, especially in U.S.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
knob   (nŏb)  Pronunciation Key 
A prominent, rounded hill or mountain.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for knob
By turning the knob on its hilt, it transforms him back into the sentinel knight.
The itasca terrain is sometimes referred to as knob and kettle.
Image for knob
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