1

a(1)

**:**a military leader

**:**the commander of a unit or a body of troops

(2)

**:**a subordinate officer commanding under a sovereign or general

(3)

**:**a commissioned officer in the army, air force, or marine corps ranking above a first lieutenant and below a major

b(1)

**:**a naval officer who is master or commander of a ship

(2)

**:**a commissioned officer in the navy ranking above a commander and below a commodore and in the coast guard ranking above a commander and below a rear admiral

c

**:**a senior pilot who commands the crew of an airplane

d

**:**an officer in a police department or fire department in charge of a unit (such as a precinct or company) and usually ranking above a lieutenant and below a chief

2

**:**one who leads or supervises: such as

a

**:**a leader of a sports team or side

b

c

**:**a person in charge of hotel bellhops

called also bell captain

3

**:**a person of importance or influence in a field

captains of industry

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Merriam-Webster unabridged
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