Acrotarsium
Ac`ro*tar"si*um\, n. [NL., from Gr. ? topmost + ? tarsus.] (Zo["o]l.) The instep or front of the tarsus.| 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 chattering or flighty, light-headed person. |
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