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

(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

a series of hills or mountains

a linked or connected series of objects

a necklace made by stringing objects together