signal lamp
Flashing message device
A signal lamp is a lamp used to send visual messages, typically by flashing light in patterns.
Naval vessels use signal lamps to communicate between ships using Morse code or other systems.
Railroad signal lamps indicate track conditions to approaching trains.
The term also applies to any lamp that conveys information through its state—on, off, or flashing.
- beaconGuiding light source
- morse codeDot-dash alphabet system
- blinkerVehicle directional signal
- semaphoreFlag-based signaling system
- warningAlert about danger
flare · strobe · lighthouse · navigation · maritime · railway · railroad crossing · traffic · red light · green light · red · green · amber · flashing · flashing light · bulb · lens · tower
- codes and cipherscipher, code, decode, decrypt, encrypt
- signalswaved, nodded, gestured, blinked, flashed
- train thingswhistle, uniform, lantern, tracks, ticket
- telegraphytelegraph, Morse code, telegraphy, telegraph key, telegraph line
- old lampskerosene lantern, oil lantern, lantern, gas light, gaslight
- signal lightsbeacon, beacon light, navigation light, warning light, emergency beacon
signal lamplighting fixture
Installed source of illumination
floodlight · streetlight · reading lamp · desk lamp · lantern
signal, lamp, signals, signaled, signaling, signaller, signalman, signalize, lamps