Latin: Mind; Intention; meaning; understanding; will. Mens legis. The mind of the law; that is, the purpose, spirit, or intention of a law or the law generally.Mens legislatoris. The intention of the law maker.Mens rea. A guilty mind; a guilty or wrongful purpose; a criminal intent. Mens testatoris in testamentis spec tanda est. Jenk. Cent. 277. The intention of the testator is to be regarded in wills.