Illustrated Companion to the Latin Dictionary/Ceraula
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.
CERAU'LA (κεραύλης). Properly a Greek word Latinized, and corresponding with the Roman CORNICEN. Apul. Met. p. 171. Ceraula doctissimus, qui cornu canens adambulabat.