1. urn-shaped - Adjective
2. urn-shaped - Adjective Satellite
Having the shape of an urn; as, the urn-shaped capsules of some mosses.
Source: Webster's dictionaryAccording to the Book of Later Han (compiled by Fan Ye in the 5th century), his bronze urn-shaped device, with a swinging pendulum inside, was able to detect the direction of an earthquake hundreds of miles/kilometers away. Source: Internet
Needham, Volume 3, 627-629 Released by a lever, a small ball would fall out of the urn-shaped device into one of eight metal toad's mouths below, at the eight points of the compass, signifying the direction the earthquake was located. Source: Internet