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loon1

[loon] /lun/
noun
1.
any of several large, short-tailed, web-footed, fish-eating diving birds of the genus Gavia, of the Northern Hemisphere.
Origin of loon1
1625-1635
1625-35; perhaps alteration of loom3

loon2

[loon] /lun/
noun
1.
a crazy or simple-minded person.
Origin
1400-50; late Middle English lowen, perhaps < Old Norse lūinn worn, tired; later influenced by loon1 and loony1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for loon
Contemporary Examples
Historical Examples
  • On the wing overhead, the loon looks not unlike a very large duck, but when it alights it ploughs into the water like a bombshell.

  • Then he threw off his main-hatch and "haw-hawed" like a loon.

    Cape Cod Stories Joseph C. Lincoln
  • The lady loon picked up the bunch of skin and examined it carefully until she discovered a hole in one foot.

    The Tin Woodman of Oz L. Frank Baum
  • He's crazier than a loon in most of his hunches, but he's filled four of our biggest gaps.

    Spacehounds of IPC Edward Elmer Smith
  • From the lake came the report of a gun, some one firing at a loon.

British Dictionary definitions for loon

loon1

/luːn/
noun
1.
the US and Canadian name for diver (sense 3)
Word Origin
C17: of Scandinavian origin; related to Old Norse lōmr

loon2

/luːn/
noun
1.
(informal) a simple-minded or stupid person
2.
(Northeast Scot, dialect) a lad
3.
(archaic) a person of low rank or occupation (esp in the phrase lord and loon)
Word Origin
C15: origin obscure
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
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Word Origin and History for loon
n.

large diving bird (especially the Great Northern Diver), 1630s, from a Scandinavian source (cf. Norwegian lom, from Old Norse lomr).

"crazy person," mid-15c., lowen "rascal," of uncertain origin, perhaps related to Dutch loen "stupid person."

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for loon

loon

Related Terms

crazy as a loon

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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4
6
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