His vois [voice] was merier than the mery orgon [merry organ].

royal, as a prince is in his halle.

"The Nun's Priest's Tale" is a satire that takes a low subject—the story of Chanticleer the rooster—and compares it to "high" literature, such as Virgil's Aeneid and the Bible. Simile is a key rhetorical device used in the tale.

One aspect of the use of simile is to compare the rooster to things of great beauty: this is why, for example, Chanticleer's comb is "redder than fine coral" and "notched with battlements as if it were a castle wall," his beak is "like the jet," and his nails "whiter than the lily." The exaggerated language of these similes serve to exalt Chanticleer in ways usually reserved for epic heroes (or heroines: much is made of his physical beauty, and indeed Chanticleer is prettier than his wife, Pertelote).

Another use of simile involves Chanticleer comparing his dream, or the importance of dreams, to many different examples in classic literature. This is another example of the low being compared to the high, and it also makes a satirical point about the uses of learning. It's funny enough that a rooster would know so much about the classics, but it is doubly funny that all his "knowledge" does not prevent him from being caught by the fox in the end.