Bulla



noun — Plural: Bullae, bullas
1.
ត្រា
ENGLISH MEANING
noun — Plural: Bullae, bullas
1.
A bleb; a vesicle, or an elevation of the cuticle, containing a transparent watery fluid.
2.
The ovoid prominence below the opening of the ear in the skulls of many animals; as, the tympanic or auditory bulla.
3.
A leaden seal for a document; esp. the round leaden seal attached to the papal bulls, which has on one side a representation of St. Peter and St. Paul, and on the other the name of the pope who uses it.
4.
A genus of marine shells.