n. biological warfare; the use of bacteria or viruses or toxins to destroy men and animals or food.
Syn. -- biological warfare. [ WordNet 1.5 ]

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 ]