scab

scab
noun

a dry, rough protective crust that forms over a cut or wound during healing
痂
■[mass noun]mange or a similar skin disease in animals
疥癣。参见sheep scab
■[mass noun][usu. with modifier]any of a number of fungal diseases of plants in which rough patches develop, especially on apples and potatoes
疥疮，疮痂斑点
(figurative, informal )a person or thing regarded with dislike and disgust
(喻，非正式)恶棍，无赖
■(derogatory)a person who refuses to strike or join a trade union or who takes the place of a striking worker
(贬)不愿参加罢工（或工会）者；顶替罢工工人去上班的人

(scabbed, scabbing)
[no obj.]

[usu. as adj. scabbed]become encrusted or covered with a scab or scabs
结痂
she rested her scabbed fingers on his arm.
她把她结痂的手指放到他的手臂上。
act or work as a scab
不参加罢工；顶替罢工工人上班
■[with obj.](Brit. informal)scrounge
(英，非正式)偷取；擅取

派生
scab-like
adjective
语源

Middle English (as a noun): from Old Norse skabb; related to dialect shab (compare with shabby). The sense 'contemptible person' (dating from the late 16th cent.) was probably influenced by Middle Dutch schabbe 'slut'

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