| rumex acetosa | |
noun | |
| European sorrel with large slightly acidic sagittate leaves grown throughout north temperate zone for salad and spring greens [syn: sour dock] |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
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