ALL meanings of water jacket
wa·ter jack·et
W w - noun water jacket a water-filled envelope or container surrounding a machine, engine, or part for cooling purposes, esp the casing around the cylinder block of a pump or internal-combustion engine 0
- noun water jacket an attached casing holding or circulating water around something to be cooled or kept at a constant temperature, esp. around or through the cylinder head and block of an internal-combustion engine 0