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boston's sign in Medicine

Boston's sign

(bôstənz)
n.
  1. An indication of Graves' disease in which the lowering of the upper eyelid is jerky during the downward rotation of the eye.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.