1. 当事者が特定の利益を共有し、死に際して彼の利益を残りの当事者に再分布する年金計画(an annuity scheme wherein participants share certain benefits and on the death of any participant his benefits are redistributed among the remaining participants)
2. 生命保険の一形態で、参加者の死亡ないしは契約不履行が起きた場合はその者の受け取り分は残りの会員に寄与される(a form of life insurance whereby on the death or default of a participant his share is distributed to the remaining members)