"Her eyes where shining brighter than the Star"

(Canto 2, line 55)

According to the opinion of many commentators, the singular "Star" is here used with plural meaning (because they describe "her eyes", there should reasonably be at least two stars). A similar use of the singular is found in the Vita Nova: "Then, as it seemed, I by degrees beheld/ The sun grow dark, and then the star appear".