Obs. [f. BLEACH sb.2, or perhaps cogn. with it, and repr. an OE. *blæcean. Cf. BLETCH v.] trans. To blacken, make black.
1611. Cotgr., Poislé … smeered, bleached, begrymed with soote. Ibid., Noircir, to blacke, blacken; bleach, darken.
