signaling device

Other forms: signaling devices

Definitions of signaling device

1. noun

   a device used to send signals
   types:

   bell

   a hollow device made of metal that makes a ringing sound when struck

   buzzer

   a signaling device that makes a buzzing sound

   foghorn

   a warning device consisting of a horn that generates a loud low tone

   whistle

   acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound

   boat whistle

   a whistle on a boat that is sounded as a warning

   church bell

   a bell in a church tower (usually sounded to summon people to church)

   cowbell

   a bell hung around the neck of cow so that the cow can be easily located

   death bell, death knell

   a bell rung to announce a death

   diaphone

   a foghorn that makes a signal consisting of two tones

   dinner bell

   a bell rung to announce that dinner has been served

   electric bell

   a bell activated by the magnetic effect of an electric current

   factory whistle

   a whistle at a factory that is sounded to announce times for starting or stopping work

   fire bell

   a bell rung to give a fire alarm

   school bell

   a bell rung to announce beginning or ending of class

   sheep bell

   a bell hung round the neck of a sheep so that the sheep can be easily located

   shop bell

   a bell attached to the door of a small shop; warns the proprietor that a customer has entered the shop

   cascabel, sleigh bell

   a bell attached to a sleigh, or to the harness of a horse that is pulling a sleigh

   steam whistle

   a whistle in which the sound is produced by steam; usually attached to a steam boiler

   tocsin, warning bell

   a bell used to sound an alarm

   type of:

   device

   an instrumentality invented for a particular purpose