A-delfan

According to the Old English Dictionary:

a-delfan

p. -dealf, -dylf, pl. -dulfon; pp. -dolfen To dig, delve: fodere, effodere: -- Cleopatra hét adelfan hyre byrigenne Cleopatra ordered her burying place to be dug, Ors. 5, 13; Bos. 113, 22. Seáþ adealf lacum effodit. Ps. Spl. 7, 16: Bd. 3, 2; S. 524, 16. óþ ðæt biþ seáþ adolfen donec fodiatur fovea, Ps. Th. 93,12 : Bd. 3, 9; S. 533, 23. a-delfan