brushless
/ˈbrʌʃlɪs/Definitions
1. adjective
not having a brush
“The new electric toothbrush is brushless, making it easier to clean teeth.”
2. noun
a device that operates without a brush, such as an electric motor
“The engineer studied the design of a brushless DC motor.”
3. noun
a type of electric motor or generator that uses electromagnetic forces to produce rotation
“The company developed a high-performance brushless motor for its new product line.”