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cache (n.)

1797, "hiding place," from French Canadian trappers' slang, "hiding place for stores and provisions" (1660s), a back-formation from French cacher "to hide, conceal" (13c., Old French cachier), from Vulgar Latin *coacticare "store up, collect, compress," frequentative of Latin coactare "constrain," from coactus, past participle of cogere "to collect," literally "to drive together," from com- "together" (see co-) + agere "to set in motion, drive; to do, perform" (from PIE root *ag- "to drive, draw out or forth, move"). Sense extended by 1830s to "anything stored in a hiding place."

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Definitions of cache from WordNet
1
cache (n.)
a hidden storage space (for money or provisions or weapons);
cache (n.)
a secret store of valuables or money;
Synonyms: hoard / stash
cache (n.)
(computer science) RAM memory that is set aside as a specialized buffer storage that is continually updated; used to optimize data transfers between system elements with different characteristics;
Synonyms: memory cache
2
cache (v.)
save up as for future use;
Synonyms: hoard / stash / lay away / hive up / squirrel away
From wordnet.princeton.edu