noun

• (rail transport) The station code of Nam Cheong in Hong Kong.
• Initialism of Native American Church. [A Native American religion that teaches a combination of traditional Native American beliefs and Christianity, with sacramental use of the entheogen peyote]
• (computing) Initialism of network access control.
• (pharmacology) Abbreviation of N-acetylcysteine.
• (biochemistry) Abbreviation of N-acetylcarnosine.