'Commander' definitions:

Definition of 'commander'

From: WordNet
noun
An officer in command of a military unit [syn: commanding officer, commandant, commander]
noun
Someone in an official position of authority who can command or control others
noun
A commissioned naval officer who ranks above a lieutenant commander and below a captain
noun
An officer in the airforce [syn: air force officer, commander]

Definition of 'Commander'

From: GCIDE
  • Commander \Com*mand"er\, n. [Cf. F. commandeur. Cf. Commodore, Commender.]
  • 1. A chief; one who has supreme authority; a leader; the chief officer of an army, or of any division of it. [1913 Webster]
  • A leader and commander to the people. --Is. lv. 4. [1913 Webster]
  • 2. (Navy) An officer who ranks next below a captain, -- ranking with a lieutenant colonel in the army. [1913 Webster]
  • 3. The chief officer of a commandery. [1913 Webster]
  • 4. A heavy beetle or wooden mallet, used in paving, in sail lofts, etc. [1913 Webster]
  • Commander in chief, the military title of the officer who has supreme command of the land or naval forces or the united forces of a nation or state; a generalissimo. The President is commander in chief of the army and navy of the United States.
  • Syn: See Chief. [1913 Webster]