Definition of Narcotics Anonymous in US English:

Narcotics Anonymous

noun

US
  • A self-help organization for recovering drug addicts, following a philosophy modelled on that of Alcoholics Anonymous. Abbreviated NA.

Origin

1950s; earliest use found in The New York Times. From the plural of narcotic + anonymous [adjective], after Alcoholics Anonymous.

Pronunciation

Narcotics Anonymous

/nɑːˌkɒtɪks əˈnɒnɪməs/