1 hiding-place, hole, vault, repository:
There was a small cache concealed by the panelling in the library.
2 store, hoard, supply, reserve, nest egg, stockpile, Colloq US and Canadian stash:
The wise hunter keeps a cache of supplies buried along his route.
3 hide, store, conceal, squirrel away, secrete, bury, Colloq stash (away):
I cached the money in a biscuit tin.