Imperial, 1) pertaining to an empire or emperor: “the i. diadem of Rome,” Tit. I, 6. “the i. seat,” Tit. I, 6 i. lord, 250 (Q1 imperious). “thy i. mistress,” II, 1, 13. “i. Caesar,” Hml. V, 1, 236 (Qq imperious). Cymb. V, 5, 474.
2) pertaining to royalty, royal: “the i. votaress,” Mids. II, 1, 163. “this i. crown,” H4B IV, 5, 41. “i. throne,” H5 I, 2, 35. crowns i. II Chor. H5 I, 2, 35 IV, 1, 278. “our voice is i.” III, 6, 131. “your most i. majesties,” V, 2, 26. i. lord, Epil. V, 2, 26 “your high i. majesty,” H6B I, 1, 1. “the high i. type of this earth's glory,” R3 IV, 4, 244. “the i. metal,” R3 IV, 4, 244 “the i. theme,” Mcb. I, 3, 129. “an i. charge,” IV, 3, 20. “the i. jointress,” Hml. I, 2, 9.
3) lordly, majestical: “i. Love,” All's II, 3, 81. “the most i. monarch,” Wint. IV, 4, 383. “Suffolk's i. tongue,” H6B IV, 1, 121. “with an i. voice,” Troil. I, 3, 187. “most i. looks,” Troil. I, 3, 187 -- Crown i., the plant Fritillaria imperialis: Wint. IV, 4, 126.
Launce's blunder for emperor: Gent. II, 3, 5.