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smart drug

 - 2 dictionary results
smart drug  
n.  Any of a variety of substances, including certain vitamins, herbs, and prescription drugs, reputed to improve such mental functions as memory and alertness or to lessen or prevent damage to brain cells.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: smart drug
Function: noun
: NOOTROPIC
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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