scab over

scab over

To form or become covered by a scab, as of a wound. That scrape is scabbing over so it can heal, but it can't do that if you keep picking at it! You need to apply pressure to stop the blood from flowing so fast, or else the cut will never be able to scab over.
See also: over, scab
Farlex Dictionary of Idioms.

scab over

[for a wound] to form a scab. The wound soon scabbed over and the injury was well on its way to healing. I hope this shaving cut scabs over before I have to leave for work.
See also: over, scab
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

scab over

v.
To become covered by a scab: The wound scabbed over and eventually healed.
See also: over, scab
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • pick at (something)
  • heal up
  • heal over
  • let alone
  • pick away at (something)
  • scrape
  • scratch at
  • scratch at (something)
  • in a scrape
  • can't thank you enough