'BWR' definitions:

Definition of 'BWR'

From: WordNet
noun
A nuclear reactor that uses water as a coolant and moderator; the water boils in the reactor core and the steam produced can drive a steam turbine [syn: boiling water reactor, BWR]

Definition of 'BWR'

From: GCIDE
  • BWR \BWR\ n. a boiling water reactor; a type of nuclear reactor that uses water as a coolant and moderator; -- the steam produced can drive a steam turbine and produce electrical power.
  • Syn: boiling water reactor. [WordNet 1.5]