As a Noun: 1. A slight, quick shaking movement, especially one you can feel in the ground or with your entire body. English = vibration. 2. An alarm clock that vibrates instead of or as well as ringing. It is used by deaf and hearing impaired people. As a Verb or Adjective: 1. To shake with a slight, quick movement, especially one you can feel in the ground or with your entire body. English = vibrate, shake.