DICT.TW Dictionary Taiwan

 Scab n.
 1. An incrustation over a sore, wound, vesicle, or pustule, formed by the drying up of the discharge from the diseased part.
 2. The itch in man; also, the scurvy. [Colloq. or Obs.]
 3. The mange, esp. when it appears on sheep.
 4. A disease of potatoes producing pits in their surface, caused by a minute fungus (Tiburcinia Scabies).
 5. Founding A slight irregular protuberance which defaces the surface of a casting, caused by the breaking away of a part of the mold.
 6. A mean, dirty, paltry fellow. [Low]
 7. 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. [Cant]
 8. Bot. Any one of various more or less destructive fungus diseases attacking cultivated plants, and usually forming dark-colored crustlike spots.