Blæc

According to the Old English Dictionary:

es;

BLÆC

n. Ink; atramentum :-- Ðæt hí habban blæc and bócfel that they have ink and parchment, L. Edg. C. 3; Th. ii. 244, 11. Blæc atramentum, Wrt. Voc. 47, 3. [Plat. blak ink: O. H. Ger. blach ink: Dan. blæk, n. ink: Swed. blæck, n. ink: Icel. blek, n. atramentum.] blac,blæc