Definitions by David
lie detector
A device that is used to find out if a person is lying. They need to ban lie detectors because they are not always right. Sometimes they say a person had lied when they really didn't lie.
lie detector by David March 6, 2004
vertebrate
An animal with a backbone. There are five classes of vertebrates. Mammals, reptiles, birds, fish and amphibians are the five classes of vertebrates.
vertebrate by David March 6, 2004