chain in WordNet English dictionary

1. a series of (usually metal) rings or links fitted into one another to make a flexible ligament
   chain 
   
2. a necklace made by a stringing objects together
   "a string of beads"; "a strand of pearls";
   chain  string  strand 
   
3. anything that acts as a restraint
   chain 
   
4. a linked or connected series of objects
   "a chain of daisies"
   chain 
   
5. a series of things depending on each other as if linked together
   "the chain of command"; "a complicated concatenation of circumstances"
   chain  concatenation 
   
6. (business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership
   chain 
   
7. (chemistry) a series of linked atoms (generally in an organic molecule)
   chain  chemical chain 
   
8. a series of hills or mountains
   "the valley was between two ranges of hills"; "the plains lay just beyond the mountain range"
   range  mountain range  range of mountains  chain  mountain chain  chain of mountains 
   
9. a unit of length
   chain 
   

1. fasten or secure with chains
   "Chain the chairs together"
   chain 
   
2. connect or arrange into a chain by linking
   chain