scab
noun
the incrustation that forms over a sore or wound during healing.
Used to express a completed action that took place before another specific past action occurred.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Another described her underarm skin as developing a pink rash which had "scabbed over".
From BBC ● Sep. 9, 2025