ALEA; civil law. The chance of gain or loss in a contract. This chance
results either from the uncertainty of the thing sold, as the effects of a
succession; or from the uncertainty of the price, as when a thing is sold
for an annuity, which is to be greater or less on the happening of a future
event; or it sometimes arises in consequence of the uncertainty of both. 2
Duv. Dr. Civ. Fr. n. 74.