To act as a flagship for.
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 triumph; to be victorious.
To be current, widespread, or predominant; to have currency or prevalence.
To be superior in strength, dominance, influence, or frequency; to have or gain the advantage over others; to have the upper hand; to outnumber others.
To succeed in persuading or inducing.