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signals A series of light, sound, or other physical cues that are used to communicate something important, such as the location of a food source or the availability of a mate. ■ "I knew it was time to start dating again when I picked up on all those signals from the other side of the bar."
Microphone A small device used to capture sound waves and convert them into electrical signals. ■ "I need a microphone to sing karaoke at the bar."
multiplex A device or system that is capable of receiving, processing, and transmitting multiple signals simultaneously. ■ I can't decide what to watch tonight - there are too many options on the multiplex!
phones A device used to communicate with people by making and receiving audio signals. ■ "I can't believe I forgot my phones at home! I'm so embarrassed."
roadway A wide, straight path for vehicles to drive on, often with pavement and traffic signals. ■ "I got lost on the roadway because there were too many roundabouts."
transmitter A device used to send signals or messages from one place to another. ■ "The television transmitter in the tower broadcasts the channels to all the receivers in the city."
Wire A thin, flexible conductor of electricity or telecommunications signals, typically made of copper or aluminum. ■ "I'm so wired for excitement today! I just got my favorite show on Netflix."
wires A thin, flexible bundle of insulated conductors used for transmitting electrical signals. ■ "I accidentally cut off my phone's wires while trying to fix the headphone jack. Now I can only call people with a landline."
Adapting The act of becoming accustomed to something new or changing, usually by altering one's behavior or characteristics. ■ After moving to a new city, Jane had to adapt to the different driving habits and weather conditions. She started wearing a coat in the winter and using turn signals more frequently on the busy streets.
Earpiece A small electronic device that fits in the ear and is used to receive audio signals from a phone or other electronic device. ■ I forgot my earpiece at home, so I had to listen to my friend's terrible jokes through my phone's built-in speakers. It was like trying to hear a duck with a mouthful of marshmallows.
Intercom A communication system that uses electronic signals to transmit information between two or more devices. It is typically used in offices, schools, and other institutions. ■ "The intercom system at our school was so loud, I felt like I was living in a fishbowl. But when the principal used it to announce a surprise test, I realized that it could be pretty useful after all!"
Receiver A device used to collect and process incoming signals or data, often in the form of audio or video broadcasts. ■ "I can't hear you over the static on my receiver. Can you turn down the volume on your TV?"
Relay A device used to transmit electrical signals from one point to another. It consists of a series of contacts that open and close in sequence. ■ "I had to use a relay to turn on the lights in my room because I was too short to reach the switch."
Retina A thin layer of tissue that lines the inner surface of the eye, containing photoreceptor cells that convert light into electrical signals which are transmitted to the brain. ■ "I had a bad case of dry eye last night, it felt like my retina was being burnt!