noun船长,机长;队长,首领;(海军)上校,(陆军或美国空军的)上尉
nounthe person who is in charge of a ship or an aircraft (= any vehicle that can fly)
nounthe leader of a group of people
nounan officer with a fairly high position in the navy (= the part of a country’s forces that fights at sea), the army and the US air force