Lewis Short
chīrŏgrăphum | chīrŏgrăphus, i | chīrŏgrăphon, i (noun N.m.n) = χειρόγραφον: n. (access. form * , , m., sc. libellus or codex, Fulvius ap. Quint. 6, 3, 100 Spald., together with chirographum, Quint. ib. 5, 13, 8; and , , n., Sid. Carm. 16, 56), = .
* One's own handwriting, autograph; pure Lat. manus (in good prose; freq. in Cic.): extrema pagella pupugit me tuo chirographo,Cic. Fam. 2, 13, 3; Planc. ib. 10, 21, 3; Cic. Phil. 1, 7, 16; 2, 4, 8: neque utar meo chirographo neque signo,id. Att. 2, 20, 5: imitari,id. N. D. 3, 30, 74 al.
* Meton (abstr. pro concr.), that which is written with one's own hand: credidi chirographis ejus (assurances in his own handwriting), Planc. ap. Cic. Fam. 10, 21, 1; so,Cic. Fam. 2, 13, 3; id. Brut. 80, 277; id. Fam. 12, 1, 2; id. Phil. 1, 7, 16; Quint. 9, 2, 73; Suet. Aug. 87; id. Tib. 6; id. Calig. 24.
* In the lang. of business, t. t., a bond, surety, or obligation under one's own hand (diff. from syngrapha, q. v.; not found with this meaning in Cic.), Gai Inst. 3, 134; Dig. 20, 1, 26; 49, 14, 3; Suet. Caes. 17; id. Calig. 12; id. Dom. 1; Gell. 14, 2, 7.
Charlton T. Lewis, Charles Short, A Latin Dictionary