0 If something, such as a machine or a military ship, is out of commission it is broken or not available to be used.
1 not working or no longer in use:
My car is out of commission again.
The breaking of the wire threw one cylinder out of commission.
The gas, electric and water plants went out of commission soon after noon, and street cars stopped operations.
With the winch out of commission, it was impossible to heave up by hand.
