Nouns

(n)chain, concatenationa series of things depending on each other as if linked together“the chain of command”, “a complicated concatenation of circumstances”
(n)chain, chemical chain(chemistry) a series of linked atoms (generally in an organic molecule)
(n)chaina series of (usually metal) rings or links fitted into one another to make a flexible ligament
(n)chain(business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership
(n)chainanything that acts as a restraint
(n)chaina unit of length
(n)range, mountain range, range of mountains, chain, mountain chain, chain of mountainsa series of hills or mountains“the valley was between two ranges of hills”, “the plains lay just beyond the mountain range”
(n)chaina linked or connected series of objects“a chain of daisies”
(n)chain, string, stranda necklace made by stringing objects together“a string of beads”, “a strand of pearls”

Verbs

(v)chainconnect or arrange into a chain by linking
(v)chainfasten or secure with chains“Chain the chairs together”