|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|a gadget; dingus; thingumbob.|
chemoreceptor che·mo·re·cep·tor (kē'mō-rĭ-sěp'tər, kěm'ō-)
A sensory nerve cell or sense organ, as of smell or taste, that responds to chemical stimuli.