Illustrated Companion to the Latin Dictionary/Dorsuarius

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. 

DORSUA'RIUS and DOSSUA'RIUS. A beast of burden; a pack-horse (Varro, R. R. ii. 10.), or ass (Id. ii. 6.), as in the example (Dorsuarius/1.1), from the triumphal arch of Constantine.

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  Dorsuarius/1.1