[dragonwriter]

> Word is from Latin - Latin plural is viri.

No, that's the Latin plural of vir; viri means "men" not "poisons" ("virus" means "poison" in Latin.) [1]

http://www.google.com/#q=translate+viri+from+latin+to+englis...

[singlow]

Oops. I mistook the genitive listing in Whitaker for a plural.