The person (or persons; or thing or things) that is (are) most excellent.
The supreme effort one can make, or has made.
One's best behavior.
Most; largest.
Most superior; most favorable.
To the most advantage; with the most success, cause, profit, benefit, or propriety.
Had best.
To surpass in skill or achievement.
To beat in a contest.
The most important one out of a related group.
The ship occupied by the fleet's commander (usually an admiral); it denotes this by flying his flag.
The ship regarded as most important out of a group, e.g. a nation's navy or company's fleet.
To act as a flagship for.