assistant at a Toastmasters’ meeting whose role is to note words and sounds used as pause fillers by anyone who speaks during the meeting, interjections such as "and," "well," "but," "so," "you know", and words or phrases repeated by a speaker

advanced vehicle safety system that helps prevent collisions by sending the driver an acoustic or visual signal to warn of the presence of standing or slow-moving obstacles in the car's path, and which also acts on the car's brakes when necessary

an electromechanical device for assisting cardiac circulation, which is used either to partially or to completely replace the function of a failing heart