n.
warning device
warning
1) to activate; give, send in, set off, sound; set an ~ (she set the ~ to go off at five)
2) to deactivate, turn off an ~
3) a burglar; fire; silent; smoke ~
4) a false ~
5) an ~ goes off, rings, sounds
apprehension, fear
6) to express; feel ~
7) to cause ~ (the incident caused great ~)
8) ~ at (to express ~ at the danger of war)