As a Noun: 1. A vehicle for taking people to or from hospital. English = ambulance. 2. An alarm or siren, usually attached to the top of a vehicle, that consists of a rotating and/or flashing light, with or without an audible alarm. As a Verb or Adjective: 1. Of a visual alarm or siren, especially one on top of a vehicle such as an ambulance, to rotate and flash.