(Queen). The Circe of the Arabians, who, by her enchantments, transformed men into horses and other brute beasts. She is introduced into the Arabian Nights' Entertainments, where Beder, Prince of Persia, marries her, defeats her plots against him, and turns her into a mare. Being restored to her proper shape by her mother, she turns Beder into an owl; but the prince ultimately regains his own proper form.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Labe from Fact Monster: