Lewis Short
(verb) : sub-sĭlĭo, lŭi, 4, salio
* To spring upwards, leap up (mostly poet.; not in Cic.).
* Lit.: decido de lecto praeceps, subsilit,Plaut. Cas. 5, 2, 50; cf. id. Curc. 1, 2, 64: non subsilis ac plaudis? Varr. ap. Non. 135, 28: semper damnosi subsiluere canes,Prop. 4 (5), 8, 46.Pegasus adusque caelum subsilit ac resultat,App. M. 8, p. 208, 33: subsiliunt ignes ad tecta domorum,Lucr. 2, 191.—*
* Trop.: subsiluisti et acrior constitisti,Sen. Ep. 13, 3.
* To leap into: jamdudum flammis dexteram objecimus aut voluntariam subsiluimus,Sen. Clem. 1, 3, 5.
Charlton T. Lewis, Charles Short, A Latin Dictionary