carboy

n. large bottle used to hold acids

A carboy or demijohn is a glass or plastic vessel that is often used in fermenting beverages such as wine, mead, and beer. Usually it is fitted with a rubber stopper and a fermentation lock to prevent bacteria from entering during the fermentation process.During the homebrewing process, a primary carboy is used for fermentation. Once primary fermentation is complete, the beer is either transferred to a secondary carboy for conditioning or it can be transferred directly to bottles for conditioning. (This process of transferring is usually called racking.)
See more at Wikipedia.org...

Noun
1. a large bottle for holding corrosive liquids; usually cushioned in a special container
(hypernym) bottle

(n.)
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.
  

A very large bottle. Glass carboys are usually encased in a wire mesh or wooden box for protection.