noun. a Marxist-Leninist terrorist organization that arose out of a student protest movement in the late 1960s; wants to separate Italy from NATO and advocates violence in the service of class warfare and revolution; mostly inactive since 1989.
noun. a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water.
1. Noun, singular or mass This is a tall, narrow variety that can grow 4 feet in one season.<br>