Word Study
strongbox
CIDE DICTIONARY
strongbox, n.
A box of rigid and durable construction fitted with a lock, used for the purpose of protecting valuable items, such as jewelry or money. [PJC]
THESAURUS
strongbox
Fort Knox, bank, bursary, cash register, cashbox, chest, coffer, coin box, depository, exchequer, fisc, gold depository, locker, money chest, penny bank, piggy bank, pork barrel, public crib, public till, public treasury, public trough, repository, safe, safe-deposit box, storehouse, strong room, subtreasury, till, treasure-house, treasury, vaultFor further exploring for "strongbox" in Webster Dictionary Online