What is Brigandine?

Legal Definition
A brigandine is a form of body armour from the Middle Ages. It is a cloth garment, generally canvas or leather, lined with small oblong steel plates riveted to the fabric.
-- Wikipedia
Legal Definition
A coat of mail or ancient armour, consisting of numerous jointed scale-like plates, very pliant and easy for the body, mentioned in 4 & 5 P. & M. c. 2.
-- Black's Law Dictionary