tocsin

An alarm sounded on a bell.

A bell used to sound an alarm.

A warning; an omen.

A signal given by means of a bell or bells; especially, a signal of alarm or of need; hence, any warning note or signal.

A bell used to sound an alarm; an alarm-bell.

Milit., an alarm-drum formerly used as a signal for charging.

An alarm bell, or the ringing of a bell for the purpose of alarm.

An alarm or other signal sounded by a bell or bells, especially with reference to France.

A bell used to sound an alarm.