/ stæʃ; NAmE / verb , noun
■ verb
[ vn + adv. / prep. ] ( informal ) to store sth in a safe or secret place :
She has a fortune stashed away in various bank accounts.
■ noun
[ usually sing. ] ( informal ) an amount of sth that is kept secretly :
a stash of money
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WORD ORIGIN
late 18th cent.: of unknown origin.