Lewis Short
stīrĭcĭdĭum (noun N) : stiria-cado
* A falling of snow-flakes, a snowing: stiricidium quasi stillicidium, cum stillae concretae frigore cadunt. Stiria enim principale est, stilla deminutivum,Fest. p. 345 Müll.; so Cato ib. p. 344.
Charlton T. Lewis, Charles Short, A Latin Dictionary