[TWENTY A. 1 b.)
1. A sheet folded into 24 leaves; a form of type for printing a sheet to be so folded (quot. 1683); a book in which the sheets are thus folded. (Always in pl.; usually in phr. in twenty-fours.)
1673. Term Catal., 6 May. Valerii Maximi dictorum factorumque memorabilium Libri IX. In Twenty-fours.
1683. Moxon, Mech. Exerc., Printing, xxiv. ¶ 15. Any Form Imposed like Twelves, as Twenty fours.
1688. R. Holme, Armoury, III. xv. (Roxb.), 23/2. Other bookes whether they be octavos, sixteens or twentyfoures.
1715. M. Davies, Athen. Brit., I. 11. The Holy Scriptures, collectively, have been often bound in all those little forms of Twelves, Sixteens and Twenty-fours.
1771. Luckombe, Hist. Print., 419. A Sheet of Twenty-fours, with Two Signatures. Ibid., 420. A Half Sheet of Long Twenty-fours.
2. A period of 24 hours; a day. nonce-use.
1735. Berkeley, Querist, § 125. To pass the twenty-fours with tolerable ease.
See also TWENTY A. 2 d, B. 3, C.