Illustrated Companion to the Latin Dictionary/Catascopium

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. 

CATASCOP'IUM. Diminutive of CATASCOPUS. A small vessel employed as a spy-ship, to keep a watch or look-out. Aul. Gell. x. 25.