Main Entry: 1cache
Pronunciation: \ˈkash\
Function: noun
Etymology: French, from cacher to press, hide, from Vulgar Latin *coacticare to press together, from Latin coactare to compel, frequentative of cogere to compel — more at cogent
Date: 1797
1 a: a hiding place especially for concealing and preserving provisions or implements b: a secure place of storage
2: something hidden or stored in a cache
3: a computer memory with very short access time used for storage of frequently or recently used instructions or data —called also cache memory

Source: http://www.merriam-webster.com/dictionary/cache