i don't know what it means, but I know what it is?

black /blak/ adjective adjective: black; comparative adjective: blacker; superlative adjective: blackest; adjective: Black 1. of the very darkest color owing to the absence of or complete absorption of light; the opposite of white. "black smoke" synonyms: dark, pitch black, as black as pitch, pitch-dark, jet black, inky, coal black, blackish; More antonyms: white (of the sky or night) completely dark owing to nonvisibility of the sun, moon, or stars. "the sky was moonless and black" synonyms: unlit, dark, starless, moonless, unlighted, unilluminated; More antonyms: clear, bright deeply stained with dirt. "his clothes were absolutely black" (of a plant or animal) dark in color as distinguished from a lighter variety. "Japanese black pine" synonyms: dark, pitch black, as black as pitch, pitch-dark, jet black, inky, coal black, blackish; More antonyms: white

I have no idea

uh idk why you would ask that? my answer is my soul

It's a color (or lack of color).

Typically a type of colour, dark

black means my soul