POS
n. countablen. Stands for piece of shit. You use it to describe something that is broken, low quality, or very annoying.
n. Abbreviation for piece of shit. Used to describe an object or person perceived as worthless or of extremely poor quality. Highly informal and vulgar in register; restricted to casual or aggressive contexts.
My old car is a total POS.
I spent all morning trying to fix this POS printer before finally giving up and buying a new one.
While the software was marketed as a revolutionary tool for productivity, the developers privately admitted it was a buggy POS that should never have left the testing phase.
Usually functions as a predicative noun following 'is' or 'a total'.
This is a POS of car.This car is a POS.The acronym functions as a single noun; you cannot insert other nouns into the middle of the phrase it represents.