What is the meaning of Spin-off?

An offshoot.

An incidental benefit or unexpected pay-off.

A by-product.

A fictional work where the protagonist was introduced in a preceding work or at least shares the same setting, often in a different aspect.

The formation of a subsidiary company that continues the operations of part of the parent company; the company so formed.

spin-off

a spin-off

Source: wiktionary.org