"Signals" Natural Recordings by Native Speakers
"Signals" can have multiple meanings depending on the context:
1. In communication or technology, a signal is a message or a code sent from one device or person to another to convey information. For example, radio signals, traffic signals, or police signals.
2. In biology, a signal is a message sent through a cell or an organism to communicate with other cells or organs. For example, a nerve signal or a hormone signal.
3. In navigation, a signal can be a marker or a warning that indicates direction or location, such as a lighthouse or a navigation signal.
4. In a more figurative sense, a signal can refer to a hint or an indicator of something. For example, a signal to start an activity or a signal that something is about to happen.
5. In law enforcement and military, a signal can be a visual, auditory, or other forms of cue to alert someone to a particular situation or action.
In general, a signal is a way of conveying information or getting someone's attention.
To warn or attract attention to something by making a signal or by lighting a signal light, such as a lighthouse, a railroad signal, or a street light.
The verb "signalling" is the present participle form of the word "signal". It means:<br><br> To show or send a sign, usually as a warning, instruction, or message, by means of a light, sound, or physical gesture.<br> To give a hint or indication, usually subtle or indirect, about something that is going to happen or is the case.<br><br>Example sentences:<br><br> The pilot started signalling to the air traffic control that they were experiencing problems with the aircraft's engine.<br> She was signalling her friend that she was in a bad mood by knocking on the door instead of ringing the bell.<br><br>Note: The verb "signalling" can also be used as a noun, which refers to the act of giving or sending a signal.
A signalman is a railway employee responsible for putting up and operating signals, switches, and other automatic train control systems to control the safe movement of trains on a railway network. They play a crucial role in ensuring the safe and efficient operation of the rail traffic, controlling the pace and direction of trains, and preventing accidents by properly signaling speed and trajectory adjustments as necessary.<br><br>In the US, they are also often responsible for generating alarm systems that alert other train crew members to upcoming hazards, but are not necessarily a traditional fireman in North America, but rather unique in their duties.
Designate or mark something clearly distinguishing it from others, typically by a sign or symbol.
A person's signature is the special way they write their name, usually made on their own as a token of identity on documents and other written materials.<br><br>To sign something means to write one's signature on it, typically to agree with its contents, authenticate its origin, or to indicate one's approval or commitment.<br><br>A signature can also refer to a person's personal distinguishable style or characteristic, such as a unique handwriting style or behavior.