3 Or ever gentle damsel so abuse:

gentle > noble; gentle abuse > violate, ill-use

4 For, may I boldly say, he surely is 5 A right good knight, and true of word iwis:

right > very iwis > certainly, indeed

6 I present was, and can it witness well, 7 When arms he swore, and straight did enterprise

arms > [the oaths of knighthood] straight > straightway enterprise > undertake

8 The adventure of the Errant Damsel,

Errant Damsel > (Una, who wandered in order to find a knight to free her parents; see Book I)

9 In which he has great glory won, as I hear tell.

201.20