noun

• A municipality in Liège province, Belgium.
• A small town in Silkeborg municipality, Jutland, Denmark.
• Abbreviation of answer. [A response or reply; something said or done in reaction to a statement or question.]
• (neuroanatomy) Initialism of autonomic nervous system. [(neuroanatomy) In humans and other vertebrates, the part of the nervous system that regulates the involuntary activity of the heart, intestines and glands. These activities include digestion, respiration, perspiration, metabolism, and the modulation of blood pressure.]