tor

tor

[tawr]
noun
a rocky pinnacle; a peak of a bare or rocky mountain or hill.

Origin:
before 900; Middle English; Old English torr < Celtic; compare Irish tor rocky height, Welsh twr heap, pile

Dictionary.com Unabridged

-tor

a suffix found in loanwords from Latin, forming personal agent nouns from verbs and, less commonly, from nouns: dictator; genitor; janitor; orator; victor.

Origin:
< Latin -tor (stem -tōr-), cognate with Greek -tōr (stem -tor-), Sanskrit -tar-

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
tor (tɔː)
 
n
1.  a high hill, esp a bare rocky one
2.  chiefly (Southwest English) a prominent rock or heap of rocks, esp on a hill
 
[Old English torr, probably of Celtic origin; compare Scottish Gaelic torr pile, Welsh twr]

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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Etymonline
Word Origin & History

tor
"high, rocky hill," O.E. torr "tower, rock." Obviously cognate with Gael. torr "lofty hill, mound," O.Welsh twrr "heap, pile;" and probably ult. from L. turris "high structure" see tower). But sources disagree on whether the Celts borrowed it from the Anglo-Saxons or the other way round.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
TOR
Toronto Blue Jays
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

tor

exposed rock mass of jointed and broken blocks. Tors are seldom more than 15 metres (50 feet) high and often occur as residues at the summits of inselbergs and at the highest points of pediments. Tors usually overlie unaltered bedrock and are thought to be formed either by freeze-thaw weathering or by groundwater weathering before exposure. There is often evidence of spheroidal weathering of the squared joint blocks

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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