へそくり

へそくり
noun
secret savings; a hidden stash of money
informalmoneydaily-life
1. secret savings; a hidden stash; nest egg kept from one's family
Money set aside little by little and kept hidden, typically by one spouse from the other or from the rest of the household.
へそくりを貯(た)める。
To build up secret savings.
My mother went on a trip with her secret savings.
While we were doing the big cleaning, my father's secret stash turned up between the pages of a book.

Often written 臍繰(へそく)り; the usual explanation is money saved from spinning hemp thread (綜麻(へそ)), not the navel (臍(へそ)).

Common collocations

Similar words