Illustrated Companion to the Latin Dictionary/Vacerra

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. 

VACERRA. A post for fastening horses to (Festus, s. v.); whence, in the plural, a strong fence made of uprights and cross-bars to confine cattle; an ox-fence. Columell. vi. 19. 2. ix. 1. 3. ix. 1. 9.