1. an instrument for receiving and recording simultaneously tracings of variations in certain body activities.
2. a test using such an instrument to determine if a person is telling the truth.
3. lie detector.
4. an apparatus for producing copies of a drawing or writing.
5. a prolific or versatile author.
–verb (used with object)
6. to test (a person) with a polygraph.
Now my heart needs a polygraph, I was so eager to pack my bags when I really want to stay.