EnglishMain Dictionary
commander
Universal Words
noun
1 a person who is in charge of sth, especially an officer in charge of a particular group of soldiers or a military operation:
military / allied / field / flight commanders * the commander of the expedition
2 (abbreviation Cdr) an officer of fairly high rank in the British or American navy
3 (abbreviation Cdr) (in Britain) a London police officer of high rank