snow n. . . . 2.a. Anything resembling snow. b The white specks on a television screen resulting from weak reception.
crash --intr. . . . 5. To fail suddenly, as a business or an economy.
---The American Heritage Dictionary
virus. . . . [L. virus slimy liquid, poison, offensive odor or taste.] 1. Venom, such as is emitted by a poisonous animal. 2. Path a. A morbid principle or poisonous substance produced in the body as the result of some disease, esp. one capable of being introduced into other persons or animals by inoculations or otherwise and of developing the same disease in them. . . . 3. fig. A moral or intellectual poison, or poisonous influence.
--The Oxford English Dictionary
