Illustrated Companion to the Latin Dictionary/Classicum

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. 

CLAS'SICUM. Properly, a signal given by sound of trumpet; whence transferred to the instrument itself by which the signal was given. Serv. ad Virg. Aen. vii. 637. Virg. Georg. ii. 539.