What is the meaning of Sovereign?

Exercising power of rule.

Having supreme, ultimate power; having fully independent power in international relations.

Exceptional in quality.

Extremely potent or effective (of a medicine, remedy etc.).

Princely; royal.

Predominant; greatest; utmost; paramount.

A monarch: a supreme ruler of a country in a monarchical system.

One who is not a subject to a ruler or nation.

2. Ellipsis of sovereign citizen.

Ellipsis of sovereign citizen.

A gold coin of the United Kingdom, with a nominal value of one pound sterling but in practice used as a bullion coin.

A former Australian gold coin, minted from 1855–1931, of one pound value.

A very large champagne bottle with the capacity of about 25 liters, equivalent to 33+⁄₃ standard bottles.

Any butterfly of the tribe Nymphalini, or genus Basilarchia, eg., ursula, viceroy.

A large, garish ring; a sovereign ring.

To rule over as a sovereign.

Source: wiktionary.org