Webster's Revised Unabridged Dictionary · 1913

Imperial

Imperial , adjective

[Old English emperial, Old French emperial, French impérial, from Latin imperialis, from imperium command, sovereignty, empire. See Empire.]

1.
Of or pertaining to an empire, or to an emperor; as, an imperial government; imperial authority or edict.
The last That wore the imperial diadem of Rome. — Shakespeare
2.
Belonging to, or suitable to, supreme authority, or one who wields it; royal; sovereign; supreme.
The imperial democracy of Athens. — Mitford
Who, as Ulysses says, opinion crowns With an imperial voice. — Shakespeare
To tame the proud, the fetter'd slave to free, These are imperial arts, and worthy thee. — Dryden
He sounds his imperial clarion along the whole line of battle. — E. Everett
3.
Of superior or unusual size or excellence; as, imperial paper; imperial tea, etc.
Collocations (9)
Imperial bushel or gallon , etc. See Bushel, Gallon, etc.
Imperial chamber , the, the sovereign court of the old German empire.
Imperial city , under the first German empire, a city having no head but the emperor.
Imperial diet , an assembly of all the states of the German empire.
Imperial drill (Manufacturing) , See under 8th Drill.
Imperial eagle (Zoology) , See Eagle.
Imperial green , See Paris green, under Green.
Imperial guard , the royal guard instituted by Napoleon I.
Imperial weights and measures , the standards legalized by the British Parliament.

Imperial , noun

[French impériale: compare Sp. imperial.]

1.
The tuft of hair on a man's lower lip and chin; -- so called from the style of beard of Napoleon III.
2.
An outside seat on a diligence. — T. Hughes
3.
A luggage case on the top of a coach. — Simmonds
4.
Anything of unusual size or excellence, as a large decanter, a kind of large photograph, a large sheet of drawing, printing, or writing paper, etc.
5.
A gold coin of Russia worth ten rubles, or about eight dollars. — McElrath
6.
A kind of fine cloth brought into England from Greece. or other Eastern countries, in the Middle Ages.
7.
A game at cards differing from piquet in some minor details, and in having a trump; also, any one of several combinations of cards which score in this game.