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 make a note of.
likewise
A question on a test, which may include its answers.
Two people who are having a romantic or sexual relationship with each other.
A line of text having a legal or other meaning; a separate particular in an account.
An object that can be picked up for later use.
A distinct physical object.
A short article in a newspaper.
A matter for discussion in an agenda.