Source : Webster's Revised Unabridged Dictionary (1913)

Carboy \Car"boy\, n. [Cf. Ir. & Gael carb basket; or Pers
   qur[=a]bah a sort of bottle.]
   A large, globular glass bottle, esp. one of green glass,
   inclosed in basket work or in a box, for protection; -- used
   commonly for carrying corrosive liquids; as sulphuric acid,
   etc.

Source : WordNet®

carboy
     n : a large bottle for holding corrosive liquids; usually
         cushioned in a special container