a Roman cognomen, properly signified a person whose nose turned up (Festus, s.v. Cic. de Nat. Deor. 1.29). The names Silo, Silius, and Silanus appear to be all connected with this name.
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890