When you have `ld`'s of memory addresses of similar indices (ex: If I have an 8 bit index and repeatedly load 0x200 and 0x300, then the cache is thrashed as between the loads the new load will eject the cache line at index 0). I honestly answered that I had no idea, but when they described it I said I had heard of the term as cache ejection, and thought they were different things.