the.com/briefcase
A flat leather box that holds your papers and your delusions of importance.
means A rectangular hard- or soft-sided case for carrying documents, laptops, and the occasional dramatic prop.
from From legal briefs, the condensed arguments lawyers hauled to court — the case carried the brief, and the name stuck before laptops crashed the party.
Nuclear optionThe presidential football is a briefcase, technically.
Status symbolSlimmer cases signaled higher rank in offices.
Spy stapleCinema gave them handcuffs and hidden weapons.