stash
verb [ T ]
informal uk/stæʃ/ usto store something, especially a large amount of money, in a safe place, often secretly:
She stashed an $84 million fortune in foreign bank accounts.
stash sth away He had never revealed to his wife that he had stashed away $3 million in assets.
stash
noun [ C ]
Over 20 years the extra savings will add $160,000 to your retirement stash.