鉄てっ鎖さてっさMeanings1nouniron chainRefers to a chain made of iron, often used in literal contexts such as restraints, fences, or heavy-duty applications.古ふるい城しろの門もんには太ふとい鉄てっ鎖さがかけられていた。A thick iron chain was fastened to the gate of the old castle.