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Definition of scab:

  1. A disease of potatoes producing pits in their surface, caused by a minute fungus ( Tiburcinia Scabies).
  2. A mean, dirty, paltry fellow.
  3. A nickname for a workman who engages for lower wages than are fixed by the trades unions; also, for one who takes the place of a workman on a strike.
  4. A slight irregular protuberance which defaces the surface of a casting, caused by the breaking away of a part of the mold.
  5. An incrustation over a sore, wound, vesicle, or pustule, formed by the drying up of the discharge from the diseased part.
  6. Any one of various more or less destructive fungus diseases attacking cultivated plants, and usually forming dark- colored crustlike spots.
  7. The itch in man; also, the scurvy.
  8. The mange, esp. when it appears on sheep.
  9. To become covered with a scab; as, the wound scabbed over.


shop, denounce, snitch, go out on strike, squealer, confess, athlete's foot, black eye, fink, betrayer, collective bargaining, traitor, industrial action, stinker, abscess, betray, rat, grass, shit, blackleg, cicatrise, tell on, turncoat, crumb, strikebreaker, lowlife, stinkpot, bedsore, rotter, squeal, stag, boil, cicatrize, so-and-so, scum bag, general strike, git, scab over, blackhead, go-slow, puke, bum, apostate, grievance procedure, blabber, action, cooling-off period, direct action, dirty dog, informer, come out, slough, skunk, deserter, give away.

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