to bake :-- Nim ælces cynnes melo and ábacæ man hláf, Lch. i. 404, 5. Þost tó cicle ábacen, 364, 15: Gr. D. 87, 21. Hláfas on beágwísan ábacene, 343, 15.
Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "a-bacan." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 1.
, ic -bace, ðú -bæcest, -bæcst, he -bæceþ, -bæcþ, pl. -bacaþ; p. -bóc, pl. -bócon; pp. -bacen To bake; pinsere, coquere :-- Se hláf þurh fýres hǽtan abacen the bread baked by the heat of fire. Homl. Pasc. Daye, A. D. 1567, p. 30, 8; Lisl. 410, 1623, p. 4, 16; Homl. Th. ii. p. 268, 9.