Bletsung-bóc

According to the Old English Dictionary:

bletsung-bóc

f. A benedictional, a book containing the forms of episcopal benedictions :-- Mæssebóc and bletsungbóc and pistelbóc, Cht. Crw. 23, 27. ii. ymneras and i. deórwyrðe bletsingbóc and .iii. óðre, Cht. Th. 430, 14. bletsung-boc