from the GNU version of the Collaborative International Dictionary of English
- n. One of the Brahmanic eons, a period of 4,320,000,000 years. At the end of each Kalpa the world is annihilated.
from The Century Dictionary and Cyclopedia
- n. In Hindu chron., a day of Brahma, a period of 4,320,000,000 years, equivalent to a thousand great ages (mahāyuga); an eon.
Sorry, no etymologies found.