Sentence:  I wanted to play a particular computer game, which required I buy a new computer, so while the game said it needed at least a dual-<WSD>core</WSD> processor, I wanted my computer to be a bit ahead of the curve, so I bought a quad-<WSD>core</WSD>. 
Meaning of the word marked with <WSD> tags:  An individual computer processor, in the sense when several processors (called cores or CPU cores) are plugged together in one single integrated circuit to work as one (called multi-core processor).