| n. | 1. | (U. S. Navy) An officer who ranks next above a captain; sometimes, by courtesy, the senior captain of a squadron. The rank of commodore corresponds with that of brigadier general in the army. |
| 2. | (British Navy) A captain commanding a squadron, or a division of a fleet, or having the temporary rank of rear admiral. | |
| 3. | A title given by courtesy to the senior captain of a line of merchant vessels, and also to the chief officer of a yachting or rowing club. | |
| 4. | A familiar for the flagship, or for the principal vessel of a squadron or fleet. |
| Noun | 1. | commodore - a commissioned naval officer who ranks above a captain and below a rear admiral; the lowest grade of admiral |