Lewis Short
Scŏtīnus (noun M) = Σκοτεινός: (the Obscure)
* An epithet of Heraclitus: legati ad Hannibalem missi Heraclitus, cui Scotino cognomen erat, etc.,Liv. 23, 39, 3 (v. Munro ad Lucr. 1, 639); cf.: Heraclitus cui cognomen fecit orationis obscuritas,Sen. Ep. 12, 7 (as Greek, Cic. Fin. 2, 5, 15).
Charlton T. Lewis, Charles Short, A Latin Dictionary