Ge-tyrfan

According to the Old English Dictionary:

ge-tyrfan

p. de To assail with missiles (lit. or fig.), to attack, assault :-- Man gecýdde ꝥ seó nunne wǽre getyrfed mid ormǽtum feforádlum nuntiatum est quod sanctimonialis illa immensis febribus aestuaret, Gr. D. 29, 9. Cf. ge-torfian. ge-tyrfan