chain

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"