[skab-id, skabd]

1250–1300; Middle English; see scab, -ed3

scabbedness, noun
unscabbed, adjective Unabridged


the incrustation that forms over a sore or wound during healing.
Veterinary Pathology. a mangy disease in animals, especially sheep; scabies. Compare itch ( def 10 ).
Plant Pathology.
a disease of plants characterized by crustlike lesions on the affected parts and caused by a fungus or bacterium.
one of these crustlike lesions.
a worker who refuses to join a labor union or to participate in a union strike, who takes a striking worker's place on the job, or the like.
Slang. a rascal or scoundrel.
a projection or roughness on an ingot or casting from a defective mold.
a surface defect on an iron or steel piece resulting from the rolling in of scale.
Carpentry. a short, flat piece of wood used for various purposes, as binding two timbers butted together or strengthening a timber at a weak spot.
verb (used without object), scabbed, scabbing.
to become covered with a scab.
to act or work as a scab.

1200–50; 1800–10 for def 4; Middle English < Old Norse skabb scab, itch; cf. shabby, shave

scablike, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
scab (skæb)
1.  the dried crusty surface of a healing skin wound or sore
2.  a contagious disease of sheep, a form of mange, caused by a mite (Psoroptes communis)
3.  a fungal disease of plants characterized by crusty spots on the fruits, leaves, etc
4.  derogatory
 a.  Also called: blackleg a person who refuses to support a trade union's actions, esp one who replaces a worker who is on strike
 b.  (as modifier): scab labour
5.  a despicable person
vb , scabs, scabbing, scabbed
6.  to become covered with a scab
7.  (of a road surface) to become loose so that potholes develop
8.  to replace a striking worker
[Old English sceabb; related to Old Norse skabb, Latin scabiēs, Middle Low German schabbe scoundrel, German schäbigshabby]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

mid-13c., "skin disease," developed from O.E. sceabb "scab, itch" (related to scafan "to scratch") and from O.N. skabb "scab, itch," both from P.Gmc. *skab- "scratch, shave" (related to shabby). Sense reinforced by cognate L. scabies "scab, itch, mange" (from scabere "to scratch;" see
scabies). Meaning "crust which forms over a wound or sore" is first attested c.1400. Meaning "strikebreaker" first recorded 1806, from earlier sense of "person who refuses to join a trade union" (1777), probably from meaning "despicable person" (1580s), possibly borrowed in this sense from M.Du.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

scab (skāb)

  1. A crust formed from and covering a healing wound.

  2. scabies or mange in domestic animals or livestock, especially sheep.

v. scabbed, scab·bing, scabs
To become covered with scabs or a scab.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
scab   (skāb)  Pronunciation Key 
A crust that forms over a healing wound, consisting of dried blood, plasma, and other secretions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

scab definition

Informally, a worker who stays on the job while others go on strike. Also, a worker brought in to keep a plant operating when its work force is on strike. (See strikebreaker.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
The period of communicability lasts until all the lesions have scabbed over and the scabs have fallen off.
Work's been done on some of the truss areas where they've been scabbed and whatnot.
Nearly all the vertical members had rotted at some time and been replaced or strengthened with new members scabbed onto them.
Do not apply a transdermal patch to an area of skin that is scabbed, scratched, or has a rash.
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