'Irons' in the Bible

Your hands were not bound, nor were your feet in irons. As one falls before the wicked, you have fallen."

Canst thou fill his skin with barbed irons? or his head with fish spears?

They afflicted his feet with fetters; his soul came into irons;

Some dwelt in darkness and in the deep (deathly) darkness,Prisoners [bound] in misery and chains,

And thus said Jehovah: For three transgressions of Damascus, And for four, I do not reverse it, Because of their threshing Gilead with sharp-pointed irons,