(metal shackles; for hands or legs)
(a series of things depending on each other as if linked together; "the chain of command"; "a complicated concatenation of circumstances")
((chemistry) a series of linked atoms (generally in an organic molecule))
(a series of (usually metal) rings or links fitted into one another to make a flexible ligament)
((business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership)
(anything that acts as a restraint)
(a unit of length)
(British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979))
(a series of hills or mountains; "the valley was between two ranges of hills"; "the plains lay just beyond the mountain range")
(a linked or connected series of objects; "a chain of daisies")
(a necklace made by a stringing objects together; "a string of beads"; "a strand of pearls";)
(connect or arrange into a chain by linking)
(fasten or secure with chains; "Chain the chairs together")