brethren > brothers
6 His bootless bow in feeble hand upcaught,
bootless > unavailing
7 And therewith shot an arrow at the lad;
therewith > with that; thereupon
8 Which, faintly fluttering, scarce his helmet raught
raught > reached
9 And, glancing, fell to ground, but him annoyed naught.
annoyed > injured; vexed naught > not at all
305.25