from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A pointed oval shape used in medieval Christian art as an aureole to surround a sacred figure.
from the GNU version of the Collaborative International Dictionary of English
- n. A glory, or aureole, of oval shape, or composed of two arcs of circles usually represented as surrounding a divine personage. More rarely, an oval composed of two arcs not representing a glory; a solid oval, etc.
New Latin vēsīca piscis : Latin vēsīca, bladder + Latin piscis, genitive of piscis, fish (from the resemblance in shape).(American Heritage® Dictionary of the English Language, Fourth Edition)