| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
again
In addition to the idiom beginning with again, also see come again; do something over again; ever and again; every now and again; here someone goes again; now and again; off and on (off again, on again); over again; something else again; time and time again; you can say that again.