"DemiJohns" refers to a type of narrow-necked glass or pottery bottle with a wickerwork covering, used for fermenting or storing liquids. This word is derived from the French word "dame-jeanne", which means Lady Jane. There are various synonyms for the word "demiJohns", including glass carboys, jugs, flagons, flasks, and containers. "Carboy" is a large globular bottle made of glass or plastic, commonly used for storing liquids in scientific laboratories. "Jug" is a container with a handle and spout, used for pouring liquids like water or juice. A "flagon" is a large metal or pottery vessel, used for holding wine or beer. "Container" refers to any receptacle used for storing something.