Þri-slite
Bosworth & Toller Anglo-Saxon Old English Dictionary - þri-slite
According to the Old English Dictionary:
-slitte(?);
- þri-slite
- adj. Three-forked, three-pointed :-- Hæfdon ða wyrmas þriesli[ ]te (a letter has been erased before the t, see note, and Anglia i. 510, icum trisulcis linguis, Nar. 14, 12. Cf. next word. þri-slite