Chain

a series of things depending on each other as if linked together

a linked or connected series of objects

a necklace made by stringing objects together

(chemistry) a series of linked atoms (generally in an organic molecule)

a series of hills or mountains

British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979)

anything that acts as a restraint

a series of (usually metal) rings or links fitted into one another to make a flexible ligament

a unit of length

(business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership

connect or arrange into a chain by linking

fasten or secure with chains