Cutoff (noun)

1. The point or level beyond which something must not be allowed to go.
2. The act of cutting off or disconnecting something.
3. An artificial channel or watercourse, typically one used to divert water for irrigation or other purposes.

Origin:

Late 18th century: from cut off.

Examples:

1. The cutoff for the application is next Friday.
2. The cutoff for the electricity was at midnight.
3. The cutoff point for the test was 70%.
4. The cutoff valve controls the flow of water.
5. The cutoff channel diverts the water to the irrigation system.