from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun One who commits murder.

from The Century Dictionary.

  • noun A person who commits murder.
  • noun Some destructive piece of ordnance. One kind thus named was usually placed, on shipboard, at the bulkheads of the forecastle, half-deck, and steerage, and used to prevent an enemy from boarding. Also murdering-piece.
  • noun Synonyms Manslayer, cutthroat, assassin, thug. See kill, transitive verb

from the GNU version of the Collaborative International Dictionary of English.

  • noun One guilty of murder; a person who, in possession of his reason, unlawfully kills a human being with premeditated malice.
  • noun obsolete A small cannon, formerly used for clearing a ship's decks of boarders; -- called also murdering piece.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A person who commits murder.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)


from Wiktionary, Creative Commons Attribution/Share-Alike License

murder +‎ -er


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