2 The prince of grace to let him run that turn.
of grace > as a favour turn > contest, round in a tournament (at which the jousting knights would converge on horseback, lances advanced, and, having passed one another, turn at the end of the course to repeat the action)
3 He granted: then the Faery quickly raught
raught > reached, took hold of
4 His poignant spear, and sharply began to spur
poignant > sharp-pointed, piercing
5 His foamy steed, whose fiery feet did burn 6 The verdant grass, as he thereon did tread; 7 Nor did the other back his foot return, 8 But fiercely forward came without dread, 9 And bent his dreadful spear against the other's head.
bent > inclined, aimed
301.6
They bene ymet, and both their points arriued,
2 But Guyon droue so furious and fell,
That seem'd both shield and plate it would haue riued;
4 Nathelesse it bore his foe not from his sell,
But made him stagger, as he were not well:
6 But Guyon selfe, ere well he was aware,
Nigh a speares length behind his crouper fell,
8 Yet in his fall so well him selfe he bare,
That mischieuous mischance his life and limbes did spare.