A circular movement or tremor of the tips of the thumb and the index finger when brought together, seen in Parkinson's disease.

Nearby words

  1. pill,
  2. pill beetle,
  3. pill bug,
  4. pill popper,
  5. pill pusher,
  6. pillage,
  7. pillar,
  8. pillar box,
  9. pillar to post,
  10. pillar-and-breast

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.