Lewis Short
(adjective) : fontĭnālis (also fontān-), e, fons
* Of or from a spring or fountain, spring-.
* Lit.: aqua,Vitr. 8, 3.—Deriv.
* Transf.
* Adj.: Fontinalis (Fontan-) porta, in Rome, towards the Campus Martius, between the Capitoline and Quirinal hills, Liv. 35, 10, 12; Inscr. Grut. 624, 11; Paul. ex Fest. p. 85 Müll.; cf. Becker's Antiq. p. 133 sq.
* Subst.: Fontĭnā-lĭa (Fontān-), ium, n., the festival of springs or fountains, celebrated on the 13th of October, Varr. L. L. 6, § 22; Calend. ap. Inscr. Orell. II. pp. 400, 412; Paul. ex Fest. p. 85 Müll.
Charlton T. Lewis, Charles Short, A Latin Dictionary