A
weapon used by
House Atreides and later by the
Fremen in
battle against
House Harkonnen. Weirding modules take certain
sounds, called '
killing words', and turn them into
blasts of
energy which can blow up
rocks, burst
organs or just plain
kill people.
Muad'dib's name became a
killing word for the Fremen.
Also see Dune.