Meaning

adjective being of the achromatic color of maximum darkness; having little or no hue owing to absorption of almost all incident light

adjective of or belonging to a racial group having dark skin especially of sub-Saharan African origin; - Martin Luther King Jr.

adjective marked by anger or resentment or hostility

originEtymology tree Proto-Germanic *blakaz Proto-West Germanic *blak Old English blæc Middle English blak English black Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English blacker From black + -er.

Etymology from Wiktionary, CC BY-SA 3.0