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1. Metal shackles; for hands or legs
   - irons

1. A series of things depending on each other as if linked together
   "the chain of command"
   - concatenation
    
2. (chemistry) a series of linked atoms (generally in an organic molecule)
   - chemical chain
    
3. A series of (usually metal) rings or links fitted into one another to make a flexible ligament
    
4. (business) a number of similar establishments (stores or restaurants or banks or hotels or theatres) under one ownership
    
5. Anything that acts as a restraint
    
6. A unit of length
    
7. A series of hills or mountains
   - range, mountain range, range of mountains, mountain chain, chain of mountains
    
8. A linked or connected series of objects
   "a chain of daisies"
    
9. A necklace made by a stringing objects together
   - string, strand

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

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

See also: catenulate

Type of: arrange, biochemist, bond, building block, business, business concern, business organisation [Brit], business organization, concern, constraint, fasten, fix, formation, geological formation, hamper, ligament, linear measure, linear unit, necklace, restraint, secure, series, set up, shackle, trammel, unit

Antonym: unchain

Part of: bicycle, bike, chain printer, chain tongs, cycle, molecule, wheel

Encyclopedia: Chain Chain, Planetary