hospital > hospice, lodging-place

6 They thither marched: but when they came in sight, 7 And from their sweaty coursers did avale,

their sweaty coursers > (Perhaps we are to infer that Arthur's squire has lent Guyon his, or a spare, horse) avale > dismount

8 They found the gates fast barred long ere night,

fast > firmly

9 And every loop fast locked, as fearing foes' despite.

loop > loop-hole fearing > [if in fear of] despite > outrage

209.11

Which when they saw, they weened fowle reproch
2 Was to them doen, their entrance to forstall,
Till that the Squire gan nigher to approch;
4 And wind his horne vnder the castle wall,
That with the noise it shooke, as it would fall:
6 Eftsoones forth looked from the highest spire
The watch, and lowd vnto the knights did call,
8 To weete, what they so rudely did require.
Who gently answered, They entrance did desire.

1 Which when they saw, they weened foul reproach