Illustrated Companion to the Latin Dictionary/Urvum
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.
URVUM or URBUM. The curved part of a plough, the plough-tail; more commonly termed BURA. Varro, L. L. v. 135. Pompon. Dig. 50. 16. 239.