Wiktionary
ursids
n. (plural of ursid English)
Wikipedia
Ursids
The Ursids (URS) meteor activity begins annually around December 17 and runs for a week plus, until the 25th or 26th. This meteor shower is named for its radiant point which is located near the star Beta Ursae Minoris (Kochab) in the constellation Ursa Minor.
Usage examples of "ursids".
Defenders -- serpents and arthropods, translucent five-legged ursids with shining glassy saber-teeth on the leading and trailing edges of their forelimbs -- keep behind the old boundary of the truce, grabbing and dispatching scions that cross from the opposite side.