Derivation of "Calamity."

In answer to "F.S. Martin"—Calamity (*calamitas*), not from *calamus*, as it is usually derived, but perhaps from obs. *calamis*, i.e. *columis*, from κολω κολαω κολαζω to maim, mutilate, and so for *columitas*. (See Riddle's *Lat.-Eng. Dictionary*.)