What is the meaning of Commander?

One who exercises control and direction of a military or naval organization.

A naval officer whose rank is above that of a lieutenant commander and below that of captain.

One who exercises control and direction over a group of persons.

A designation or rank in certain non-military organizations such as NASA and various police forces.

The chief officer of a commandry.

A heavy beetle or wooden mallet, used in paving, in sail lofts, etc.

A rank within an honorary order: e.g. Commander of the Legion of Honour.

Any of various nymphalid butterflies of the Asian genus Moduza.

a soldier who has attained the rank of sergeant or higher

to order (tell someone to do something)

to order (ask for a product)

Source: wiktionary.org