com ‧ mand ‧ er /kəˈmɑːndə $ kəˈmændər/ BrE AmE noun [countable]
1 . an officer of any rank who is in charge of a group of soldiers or a particular military activity:
the American Commander, General Otis
our platoon commander
2 . a high rank in the navy, or someone who holds this rank
3 . a British police officer of high rank
⇨ ↑ wing commander