headstall, ornament on a bride
鍐 centers on ornamental metalwork for a horse's headgear, specifically a decorative headstall or bridle ornament.
鍐 combines 金 (metal) with 㚇, which likely contributes sound. The exact historical development of 㚇 is uncertain, but the character as a whole refers to a metal ornament for a horse's head.
The left side 金 (metal) suggests a metal object, and the right side 㚇 looks like a complex decorative shape. Imagine a shiny metal ornament on a horse's bridle, with intricate metalwork forming the 㚇 pattern.
For ソウ, picture a horse wearing a decorative headstall made of metal, and the sound of the metal clinking is a soft 'sou' (ソウ) as the horse moves.