signaling device
- noun
- /ˈsɪɡnəlɪŋ dɪˈvaɪs/
- US
- Controlled learning was defined as a method of instruction in which behavior is shaped in an ongoing process, often through the use of one-way mirrors and signaling devices.
Examples
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Federal and state laws require boaters to carry signaling devices for safety.
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CRANE: This is some kind of signalling device.
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Life jackets and a sound signaling device.
Blog text (10) -
A bright orange traffic flag is a great signaling device for warning drivers.
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In emergencies, a whistle serves as an effective signaling device to attract attention.
Synonyms
A device that makes a sound to get someone's attention
A light or action used to get people's attention
A light or fire used to send a message over a distance
How Noticeable
Surface Forms
Morphology
The meaning 'a device designed to send signals' is directly and compositionally derived from 'signaling' (related to sending signals) + 'device' (a manufactured item). This is a common noun–noun compound pattern found across languages and follows literal semantics, so a B1 learner who knows the constituents will readily infer the meaning.
Etymology
The noun signaling device comes from the simple idea of a signaling tool and a device people used to send a message, like flags, smoke, flares or bells that could be seen or heard from far away. So a signaling device today means a tool made 'to send information' or 'to get attention' in an emergency.