资料来源 : Webster's Revised Unabridged Dictionary (1913)

Paragrele \Pa`ra`gr[^e]le"\, n. [F., fr. parer to guard +
   gr[^e]le hail.]
   A lightning conductor erected, as in a vineyard, for drawing
   off the electricity in the atmosphere in order to prevent
   hailstorms. [France] --Knight.