Dictionary.com
Thesaurus.com
Synonyms

tor

1 American  
[tawr] / tɔr /

noun

  1. a rocky pinnacle; a peak of a bare or rocky mountain or hill.


-tor 2 American  
  1. a suffix found in loanwords from Latin, forming personal agent nouns from verbs and, less commonly, from nouns.

    dictator; genitor; janitor; orator; victor.


tor British  
/ tɔː /

noun

  1. a high hill, esp a bare rocky one

  2. a prominent rock or heap of rocks, esp on a hill

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of tor1

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

Origin of -tor2

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