Illustrated Companion to the Latin Dictionary/Arenaria
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.
ARENA'RIA or ARENA'RIUM. A sand-pit. Cic. Varro. Vitruv.