Þridding
Bosworth & Toller Anglo-Saxon Old English Dictionary - þridding
According to the Old English Dictionary:
(?), e;
- þridding
- f. The doing of a thing for the third time (? Halliwell gives thirding with this meaning as a Suffolk word) :-- Ðirding (but the word has been altered to ðirde. tertio naufragantem, Rtl. 61, 31. þridding