Seonoþ-bóc

According to the Old English Dictionary:

seonoþ-bóc

f. A book containing the decrees of a synod:-- Hié on monegum senoþum monegra menniscra misdǽda bóte gesetton, and on monega senoþbéc hý writon, hwǽr ánne dóm, hwǽr óðerne, L. Alf. 49; Th. i. 58, 15. seonoþ-boc