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chigger

[chig-er]
noun
  1. Also called harvest mite, redbug. the six-legged larva of a mite of the family Trombiculidae, parasitic on humans and other vertebrates, sucking blood and causing severe itching and acting as a vector of scrub typhus and other infectious diseases.
  2. chigoe.
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Also jigger.

Origin of chigger

1735–45, Americanism; variant of chigoe
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for chigger

chigger

noun
  1. Also called: chigoe, redbug US and Canadian the parasitic larva of any of various free-living mites of the family Trombidiidae, which causes intense itching of human skin
  2. another name for the chigoe (def. 1)
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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

Word Origin and History for chigger

n.

1756, from West Indies chigoe (1660s), possibly from Carib, or from or influenced by words from African languages (e.g. Wolof and Yoruba jiga "insect").

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Online Etymology Dictionary, © 2010 Douglas Harper

chigger in Medicine

chigger

(chĭgər)
n.
  1. The six-legged larva of mites of the family Trombiculidae, parasitic on humans and other vertebrates and inflicting a bite that produces a wheal accompanied by intense itching. harvest bug harvest mite jigger red bug
  2. Chigoe.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.