"a corselet of scales," a cuirass formed of pieces of metal overlapping each other, like fish-scales ( 1 Samuel 17:5 ); also (38) a corselet or garment thus encased.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Bibliography InformationEaston, Matthew George. "Entry for Mail, Coat of". "Easton's Bible Dictionary". .