BOS. See MAMMALIA Index.
Bos, in Antiquity, was peculiarly used for an ancient Greek silver coin, which was didrachmus, or equivalent to two drachms. It was so called as having on it the impression of an ox, and chiefly obtained among the Athenians and Delians; being sometimes also struck of gold. From this arose the phrase Bos in lingua, applied to those who had taken bribes to hold their tongue.