This word appears only in Exodus 28:32 and 39:23, both describing the high priest's robe (me'il). Specifically, it refers to the reinforced opening at the top of the garment—the neck hole through which the priest put his head. The text compares this opening to that of a coat of mail, suggesting it was woven or bound in a way that prevented tearing, similar to how armor was constructed. The Targum understands it as 'corselet' or armor. The detail emphasizes the careful craftsmanship and durability required for sacred vestments.