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cockatoo

[kok-uh-too, kok-uh-too] /ˈkɒk əˌtu, ˌkɒk əˈtu/
noun, plural cockatoos.
1.
any of numerous large, noisy, crested parrots of the genera Cacatua, Callocephalon, Calyptorhynchus, etc., of the Australasian region, having chiefly white plumage tinged with yellow, pink, or red: popular as a pet.
2.
Australian.
  1. a person who owns and works a small farm or ranch.
  2. Slang. a lookout posted by criminals or the operators of illegal gambling games.
Origin
Central Moluccan
1610-1620
1610-20; < Dutch kaketoe < Malay kakatua, perhaps etymologizing alteration of Central Moluccan jaka any psittacine bird, by association with Malay kakak sibling, kakak tua older sibling); spelling copies cock1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cockatoo

cockatoo

/ˌkɒkəˈtuː; ˈkɒkəˌtuː/
noun (pl) -toos
1.
any of various parrots of the genus Kakatoe and related genera, such as K. galerita (sulphur-crested cockatoo), of Australia and New Guinea. They have an erectile crest and most of them are light-coloured
2.
(Austral & NZ) a small farmer or settler
3.
(Austral, informal) a lookout during some illegal activity
Word Origin
C17: from Dutch kaketoe, from Malay kakatua
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 cockatoo
n.

1610s, from Dutch kaketoe, from Malay kakatua, possibly echoic, or from kakak "elder brother or sister" + tua "old." Also cockatiel (1880), from Dutch diminutive kaketielje (1850), which is perhaps influenced by Portuguese. Spelling influenced by cock (n.1).

Online Etymology Dictionary, © 2010 Douglas Harper
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16
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