bi‧o‧weap‧on /ˈbaɪəʊwepən $ ˈbaɪoʊ-/
noun [countable] bacteria or
viruses (=very small living things that cause illness or disease) used as a weapon to kill a lot of people
Synonym : biological weapon:
He warned that influenza could be used as a bioweapon. [TahlilGaran] Dictionary of Contemporary English ▲