scrub in
Advanced (C1)neutral
To wash your hands and arms in a special medical way so you can go into an operating room
"The attending surgeon told the medical student she could scrub in for the appendectomy."
Hear it in context
NYC City 3D Destruction Workflow in Blender, Maya, & Houdini
Sir Wade Neistadt · 5:40
to scrub in music software or in Premiere if you're editing,
Learn Real-Life English: Everyday Chores 🧺🧹 | Comprehensible Input
Pensando Inglés · 10:34
You'd have to scrub and scrub and scrub in a a sink in your bathtub.