Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A drug, C21H25NO3, used as an antagonist to narcotic drugs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An opiate derivative used mainly to manage alcoholism.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[nal(trexone) + mefene (probably shortening and alteration of methylene).]

Examples

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