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| 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 screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
Glossina Glos·si·na (glô-sī'nə)
n.
A genus of bloodsucking dipterous flies comprising the tsetse flies of tropical and subtropical Africa; they serve as vectors of the pathogenic trypanosomes that cause various forms of African trypanosomiasis.