water jacket

1. 1.

   a container filled with water that surrounds a machine to cool it; especially that surrounding the cylinder block of an engine

   Broadervessel

Questions about water jacket

What does water jacket mean?

water jacket means "a container filled with water that surrounds a machine to cool it; especially that surrounding the cylinder block of an engine".

Is water jacket a common word?

water jacket is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.