irons
‘iron shackles or fetters’
Lexical development traced from the Tamil root:
E. iryn, yren, heyron, yryne, yrone < M.E. iron < O.E. iren variant (with rhotacism of -s-) of isen < Proto-G. isarn < Ce. isarnon + s < is-(e)ro ‘powerful, holy’ < ai < eis < Tamil irumpu