Lewis Short
sēcessus (noun M) : secedo
* A going away, departure, separation (not ante-Aug.).
* In gen. (very rare): avium,Plin. 10, 29, 41, § 76: quasi quodam secessu mentis atque animi facto a corpore,Gell. 2, 1, 2.
* In partic.
* (Acc. to secedo, I. B. 1.) Retirement, solitude (the prevailing signif. of the word; syn. solitudo).
* Lit.: carmina secessum scribentis et otia quaerunt,Ov. Tr. 1, 1, 41; cf.: medium tempus in otio secessuque egit, Suet. Vesp. 4: in secessu ruris sui Sabini, id. Fragm. Vit. Hor. fin.: silentium et secessus non semper possunt contingere,Quint. 10, 3, 28; 10, 3, 23; Suet. Aug. 94; 98; id. Tib. 43; 56; 72; id. Galb. 8: specie secessus exul,Tac. A. 1, 4 fin.: unus e senatoribus Rhodii secessus comes,id. ib. 4, 15: gratum litus amoeni secessus,Juv. 3, 5 et saep.
* (Acc. to secedo, I. B. 2.) For the usual secessio (II.), a political secession: iratae plebis secessus,Plin. 19, 4, 19, § 56.
* A place of retirement, privy, drain (late Lat.), Vulg. Matt. 15, 17; id. Marc. 7, 19.
Charlton T. Lewis, Charles Short, A Latin Dictionary