A person who guards money for someone else, often to prevent it from being spent on unscheduled needs.

(sometimes capitalized) Long-standing nickname of a complicated, seemingly man-made excavation on Oak Island in Nova Scotia, Canada, rumored to contain pirate treasure and which has been repeatedly and unsuccessfully probed at great expense.

(idiomatic) A possession or financial commitment, especially a building or vehicle, that creates substantial ongoing expenses, especially one whose costs are considered to be unsustainable.

The virtual money used in e-banking.

plural of money tree

(historical) A tax applied to coastal towns for their defence in wartime.

The act of exchanging currency of one type for another for a fee or percentage.

(finance, securities) Of an option, yielding a loss if exercised. / Failing to achieve a sufficiently high ranking in a contest to earn money (for oneself, or for those who have placed a bet).

(historical) An assessment formerly levied in every county in Scotland for the expenses of catching and prosecuting criminals.

(historical) Money paid for apprehending deserters and those absent without leave. / (historical) Money deducted from the wages of such absentees.