Illustrated Companion to the Latin Dictionary/Boiae

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. 

BOI'AE. Probably identical with the Greek κλοιοί, which was a large wooden collar, put round the neck of mischievous dogs (Xen. Hell. ii. 4. 41.); whence the Romans applied the word, in a similar sense, to a collar of wood or iron put round the neck of slaves and criminals. Plaut. As. iii. 2. 5. Id. Capt. iv. 2. 109. Prudent. Praef. Psych. 34. Hieron. 5. in Hierem. 27.