Breastplate, coat of mail, habergeon, harness. See H5630 (סִרְיֹן)

Etymology

or שִׁרְיֹן; and שִׁרְיָן; also (feminine) שִׁרְיָה; and שִׁרְיֹנָה; from H8281 (שָׁרָה) in the original sense of turning;