poignant > sharp-pointed, piercing puissant sway > powerful force
4 At proud Cymochles, while his shield was wide,
wide > [held aside, held in such a way that he was unprotected]
5 That through his thigh the mortal steel did gride:
That > [So that] mortal > deadly gride > pierce
6 He, swerving with the force, within his flesh 7 Did break the lance, and let the head abide:
abide > remain
8 Out of the wound the red blood flowed fresh, 9 That underneath his feet soon made a purple plash.
purple > red, blood-red plash > puddle, pool
208.37