1. A double quantity; twice as much or many; a number or magnitude multiplied by two.
1393 J. Gower Confessio I. 170 He saith that other have shall The double of that his felawe axeth.
a1400 (1325) Cursor Mundi (Gött.) l. 7644 Dauid him þe doubil broght.
c1430 Art Nombryng (1922) 7 If thow truly double the halfis and truly half the doubles.
c1500 Three Kings’ Sons (E.E.T.S.) 76 There were moo slayn of them by double than they were that assailed them.
1611 Bible (A.V.) Isa. lxi. 7 In their land they shal possesse the double.
1715 tr. D. Gregory Elements Astron. I. ii. §59. 350 The arcs GL, LH‥respectively the doubles of AE, EB.
1875 B. Jowett tr. Plato Dialogues (ed. 2) I. 485 Ten, which is the double of five.
2. A thing that is an exact repetition of another.
†a. A duplicate, copy, transcript (of a writing). Obs. (chiefly Sc.)
1543 Sc. Acts Mary (1814) 436 (Jam.) The auctentik dowble of thir our souerain ladeis lettrez of summondis.
1628 R. Boyle Diary in Lismore Papers (1886) II. 259 My laste will and testament, with a dowble therof, both signed.
1752 J. Louthian Form of Process (ed. 2) 60 Of which Warrant, the Messenger‥is‥ordained to give a just Double‥to the Prisoner himself.
b. A counterpart; an image, or exact copy (of a thing or person).
c. spec. The apparition of a living person; a wraith, fetch.
1798 Geraldina II. 189 Lady Withers, who is this Lady’s double, and attends her constantly.
1818 H. J. Todd Johnson’s Dict. Eng. Lang., Double‥4. In modern times, used for resemblance; as, his or her double, meaning another person extremely like the party.
1826 B. Disraeli Vivian Grey II. iii. v. 50, I fancy, that in this mysterious‥woman, I have met a kind of double of myself.
1826 W. Hone Every-day Bk. (1827) II. 1012 The ‘fetch’ or double of the Gottingen student.
1871 R. A. Proctor Light Sci. 294 The appearance of a double or ‘fetch’ has ever been held‥to signify approaching death.
†d. pl. Two of the same kind; twins. Obs.
1413 Pilgr. Sowle (1483) v. x. 100 Gemini that ben cleped twynnes or doubles.