noun - a substance or material that allows electricity to pass through it under some conditions but not under others, used especially in electronic devices
noun, technical - a plant witch clusters of small white and pink flowers whose root is used in medicine, often to help people relax or sleep
noun - a contest in which two teams pull on opposite ends of a rope, each trying to drag the other across a central line
noun - a rotating tray, usually placed in the center of a table, that makes it easy for people to reach food or other items