n. 25B6; noun
he was held in chains : FETTERS, shackles, irons, leg-irons, manacles, handcuffs; informal cuffs, bracelets; Brit. archaic, informal darbies; historical bilboes; archaic gyves.
a chain of events : SERIES, succession, string, sequence, train, course.
a chain of shops : GROUP, multiple shop/store, multiple.
25B6; verb she chained her bicycle to the railings : SECURE, fasten, tie, tether, hitch; restrain, shackle, fetter, manacle, handcuff.