| 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 children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
atonic a·ton·ic (ā-tŏn'ĭk)
adj.
Relating to, caused by, or exhibiting lack of muscle tone.