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blackleg

 - 3 dictionary results
Black Legs
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black⋅leg

  [blak-leg] noun, verb, -legged, -leg⋅ging.
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–noun
1. Also called black quarter, symptomatic anthrax. Veterinary Pathology. an infectious, often fatal disease of cattle and sheep, caused by the soil bacterium Clostridium chauvoei and characterized by painful, gaseous swellings in the muscles, usually of the upper parts of the legs.
2. Plant Pathology.
a. a disease of cabbage and other cruciferous plants, characterized by dry, black lesions on the base of the stem, caused by a fungus, Phoma lingam.
b. a disease of potatoes, characterized by wet, black lesions on the base of the stem, caused by a bacterium, Erwinia atroseptica.
3. a swindler, esp. in racing or gambling.
4. British Informal. a strikebreaker; scab.
–verb (used with object) British Informal.
5. to replace (a worker) who is on strike.
6. to refuse to support (a union, union workers, or a strike).
7. to betray or deceive (a person or cause).
–verb (used without object)
8. British Informal. to return to work before a strike is settled.
Origin:
1715–25; black + leg; orig. of nonliteral senses unclear; cf. jackleg
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Black Legs
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black·leg   (blāk'lěg')   
n.  

  1. An infectious, usually fatal bacterial disease of cattle and sometimes of sheep, goats, and swine, caused by Clostridium chauvoe and characterized by gas-containing swellings in the musculature.

  2. A bacterial or fungal disease of certain plants, such as the cabbage and potato, that causes the stems to turn black at the soil line.

  3. One who cheats at cards; a cardsharp.

  4. Chiefly British A worker who is opposed to trade unions; a scab.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: black·leg
Pronunciation: 'blak-"leg, -"lAg
Function: noun
: an enzootic usually fatal toxemia especially of young cattle caused by toxinsproduced by an anaerobic soil bacterium of the genus Clostridium (C. chauvoei syn. C. feseri) called also black quarter, quarter evil, quarter ill,symptomatic anthrax; —compare BLACK DISEASE, MALIGNANT EDEMA
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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