| 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. |
oscillate os·cil·late (ŏs'ə-lāt')
v. os·cil·lat·ed, os·cil·lat·ing, os·cil·lates
To swing back and forth with a steady, uninterrupted rhythm.
To vary between alternate extremes, usually within a definable period of time.