From WordNet (r) 3.0 (2006):
cache
n 1: a hidden storage space (for money or provisions or weapons)
2: a secret store of valuables or money [syn: hoard, cache,
stash]
3: (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 [syn: cache, memory cache]
v 1: save up as for future use [syn: hoard, stash, cache,
lay away, hive up, squirrel away]