Found 2 items, similar to water jacket.
English → English (WordNet) Definition: water jacket water jacket n : a container filled with water that surrounds a machine to cool it; especially that surrounding the cylinder block of an engine
English → English (gcide) Definition: water jacket water jacket \water jacket\ A chamber surrounding a vessel or tube in which water may be circulated, thereby regulating the temperature or supply of heat to the vessel. Used in laboratory and manufacturing equipment. [1913 Webster]