A breastplate, the Sidonian name of Hermon (q.v.), Deut. 3:9;
Ps. 29:6.
Smith's Dictionary
(breastplate), one of the various names of MountHermon, that by which it was known to the Zidonians. (3:9) The use of the name in (Psalms 29:6) (slightly altered in the original—Shirion instead of Sirion) is remarkable.