irons

something that physically prevents free movement guards forced the prisoners to sleep while still shackled in irons Synonyms band, bind, bracelet, chain, cuff(s), fetter, handcuff(s), bond, ligature, manacle(s), shackleRelated Words captivity, confinement, constraint, curb, enchainment, enslavement, hindrance, immurement, imprisonment, incarceration, restraint, restriction; entanglement, net, trammel, trap; collar, straitjacket (also straightjacket); fastener, hobble, hold, hold-down, holding, tie