From Middle English blak, blac (“pale”), from Old English blāc (“pale, pallid, wan, livid; bright, shining, glittering, flashing”) and Old Norse bleikr (“pale; white, fair”); both from Proto-Germanic *blaikaz (“pale; shining”), from Proto-Indo-European *bʰlē- (“to shimmer, glow”). Compare Scots bleg (“light, drab”). More at bleak.
From Old English blæc.
- English: black