OC

OC or OoC is not from this millennia. It has been used in many fields for many decades in particular engineering-related circles. I came across it in the 1950s when working in the Electricity generation field. it means "Out of Commission" as in not working. Applied to machinery, electrical, hydraulic, and many other systems or pieces of equipment, large or small. It does not mean “original content” and “original character.” Those are newbie definitions.

The pump is OC, it failed yesterday. My truck is OC, it needs a new motor.