[ muh k-nawt-n ]
/ məkˈnɔt n /
a rule that defines a person as legally insane when that person cannot distinguish right from wrong.
Origin of M'Naghten test
after Daniel M'Naghten (died 1865), defendant in a murder case adjudicated in England in 1843
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019