Usually this means a regular donation, but it can also be a one-off payment.

These are one-off payments made by film or television companies to the copyright holder of a song.

There is no contract, just a one-off payment for a set top box.

For this idea he received a one-off payment of one hundred Reichmarks.

In addition, a number of one-off payments were made to the Partnerships.

There is no contract - just a one-off payment for equipment.

Webb sold the film rights for a one-off payment reported to be $20,000.

At the moment it looks as if it is a one-off payment.

Even a one-off payment - however generous it might be - does not provide security.

This is a one-off payment for the full amount.