Habergeon

He is never out of hearing; and if at any time they be put to the worst, he if possible comes in to help them; and of him it is said, The Sword of him that layeth at him cannot hold, the Spear, the Dart, nor the Habergeon: he esteemeth Iron as Straw, and Brass as rotten Wood.

The Pilgrim’s Progress, in the Similitude of a Dream; The First Part. Paras. 600-699 1909

See (3: 9) + The [175] Habergeon is mentioned but twice -- in reference to the gown of the high priest.

Smith's Bible Dictionary 1884

{35} Habergeon, small hauberk, armour for the neck.

Playful Poems Henry Morley 1858