1. Rood: the cross on which Christ was crucified; Anglo-Saxon,
“Rode.”
2. Well worth of this thing greate clerks: Great scholars set
much worth upon this thing — that is, devote much labour,
attach much importance, to the subject of dreams.
3. The poet briefly refers to the description of the House of
Somnus, in Ovid’s “Metamorphoses,” 1. xi. 592, et seqq.; where
the cave of Somnus is said to be “prope Cimmerios,” (“near the
Cimmerians”) and “Saxo tamen exit ab imo Rivus aquae
Lethes.” (“A stream of Lethe’s water issues from the base of the
rock”)