[tɒnˈtiːn], (Noun)

Definitions:
- an annuity shared by subscribers to a loan or common fund, the shares increasing as subscribers die until the last survivor enjoys the whole income


Phrases:

Origin:
mid 18th century: from French, named after Lorenzo Tonti (1630–95), a Neapolitan banker who started such a scheme to raise government loans in France (c.1653)