sequester >> sɪˈkwɛstə
Definition: [verb] isolate or hide away.
Example: she is sequestered in deepest Dorset
Definition: [verb] another term for sequestrate.
Example: their property was sequestered by Parliament
Definition: [verb] form a chelate or other stable compound with (an ion, atom, or molecule) so that it is no longer available for reactions.
Example: non-precipitating water softeners use complex phosphates to sequester calcium and magnesium ions
Definition: [noun] a general cut in government spending.
Example: if the budget deal hadn't gone through, there would have been a sequester of at least $100 billion