What is the meaning of Proprietary?

Of or relating to property or ownership.

Owning something; having ownership.

Created or manufactured exclusively by the owner or licensee of intellectual property rights, as with a patent or trade secret.

Nonstandard and controlled by one particular organization.

Privately owned.

Possessive, jealous, or territorial.

A proprietor or owner.

A body of proprietors, taken collectively.

The rights of a proprietor.

A monk who had reserved goods and belongings to himself, notwithstanding his renunciation of all at the time of profession.

A company doing legitimate business while also serving as a front for espionage.

Source: wiktionary.org