heal over
Intermediate (B1)neutral
For a cut or sore to get better and grow new skin on top.
"Keep the bandage on until the cut heals over — you don't want it to get infected."
Hear it in context

Winning With the *BEST* EXOTICS in Fortnite History
TG Plays · 96:21
I mean, you can heal over 150 unlike minis.

Magnetic gel injected into the heart could stop strokes
nature video · 1:49
with the heart and eventually the heart will heal over it.

Why people think they see ghosts
Vox · 5:02
A sudden hole has been left in one’s life, and this helps it to heal over.