crowbar; pry bar
A heavy iron bar used for prying or demolition. The most common meaning in everyday Japanese.
from English bar
I used a crowbar to pry the door open.
Scientific/technical unit of pressure. Not commonly used in daily conversation.
The tire pressure is set to 2.2 bar.
The burglar pried the door open with a crowbar and broke in.
The culprit struck the man with a crowbar.