scab

Definition

A crust that forms over a wound as it heals; a person who continues to work during a strike, breaking ranks with fellow workers.

日本語 傷が癒されるにつれて形成される皮膚の保護膜;ストライキ中に従業員が労働を続け、同僚と袂を分かつ人

Example

"He picked at the scab on his knee despite being told not to."