What Is an Elf?

i have to know, what is an elf? What makes someone an elf? Like, i kind of asked this question rhetorically to day on twit. One answer was ike, well, it's its biology, alright? If youere, if you were not descended from a landed aristocrat, you can't, you can never be an elf. I don't think that's what curtis jarvin means. However, if it is what he means, then i'm an elf, 100 % for sure. So i guess if if makes meif i'maf in any scenario, i're an elf. O this makes me sense. Well, yet i well. And