/bool"euh, bul"euh/ , n. , pl. bullae /bool"ee, bul"ee/ .
1. a seal attached to an official document, as a papal bull.
2. an ancient Roman pendant, consisting of a rounded box containing an amulet.
3. Pathol. a large vesicle.
4. Zool. a blisterlike or bubblelike prominence of a bone, as that of the tympanic bone in the skull of certain mammals.
[ 1840-50; bulla official seal) ]