A-scirpan
Bosworth & Toller Anglo-Saxon Old English Dictionary - a-scirpan
According to the Old English Dictionary:
a-scyrpan, a-scerpan, a-scearpan;
- a-scirpan
- p. te, tun; pp. ed To sharpen; exacuere :-- Swíðor ablendaþ ðæs módes eágan ðonne hí hí ascirpan they rather blind the eyes of the mind than sharpen them, Bt. 34, 8; Fox 144, 34.