Illustrated Companion to the Latin Dictionary/Trifax

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

TRI'FAX. A missile of four and a half cubits long, which was discharged from the catapulta (Festus, s. v. Ennius ap. Fest. l. c. Aul. Gell. x. 25. 1.); probably a sort of spear, so denominated from having three barbs, as in the example (Trifax/1.1), which is copied from the column of Trajan.

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  Trifax/1.1