Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Slang a habitual user of drugs
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
also drug·gynoun pl. drug·gies Slang
One that takes or is addicted to drugs: “They're like druggies, but without drugs; they're drugged on their own apathy” (Pauline Kael).