1. (n.) A chief; one who has supreme authority; a leader; the chief officer of an army, or of any division of it.

2. (n.) An officer who ranks next below a captain, -- ranking with a lieutenant colonel in the army.

3. (n.) The chief officer of a commandery.

4. (n.) A heavy beetle or wooden mallet, used in paving, in sail lofts, etc.

A per se ADC CO OD ace admiral aide aide-de-camp boatswain boss brigadier brigadier general captain castellan champion chatelain chatelaine chicken colonel chief chief engineer chief mate chief of staff chief petty officer colonel commandant commander in chief commanding officer commissioned officer commodore company officer dean deck officer director ensign exec executive executive officer field marshal field officer first lieutenant five-star general fleet admiral four-star general fugleman general general officer generalissimo genius governor head higher-up intendant jemadar junior officer laureate leader lieutenant lieutenant colonel lieutenant commander lieutenant general lieutenant junior grade major major general manager marechal marshal master mate naval officer navarch navigating officer navigator nonpareil officer one-star general orderly officer paragon patron petty officer pipes principal prodigy quartermaster rear admiral risaldar ruler sailing master second mate senior senior officer shavetail shipmaster sirdar skipper staff officer star subahdar subaltern sublieutenant superior superman superstar the Old Man the brass the greatest the most three-star general top brass top dog two-star general vice admiral virtuoso warrant officer watch officer