Definition of chain
(Entry 1 of 3)
1a
: a series of usually metal links or rings connected to or fitted into one another and used for various purposes (such as support, restraint, transmission of mechanical power, or measurement)
b
: a series of links used or worn as an ornament or insignia
c(1)
: a measuring instrument of 100 links used in surveying
(2)
: a unit of length equal to 66 feet (about 20 meters)
2
: something that confines, restrains, or secures
3a
: a series of things linked, connected, or associated together
a chain of events a mountain chain
b
: a group of enterprises or institutions of the same kind or function usually under a single ownership, management, or control
fast-food chains
c
: a number of atoms or chemical groups united like links in a chain
chain
verb
chained;
chaining;
chains
Definition of chain (Entry 2 of 3)
1
: to obstruct or protect by a chain
Chain
biographical nameDefinition of Chain (Entry 3 of 3)
Sir Ernst Boris 1906–1979 British (German-born) biochemist
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