Search Result for "water jacket":
Wordnet 3.0

NOUN (1)

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



WordNet (r) 3.0 (2006):

water jacket
    n 1: a container filled with water that surrounds a machine to
         cool it; especially that surrounding the cylinder block of
         an engine