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black ring

noun

, Plant Pathology.
  1. a disease of grasses, characterized by black rings surrounding the stems and blighted seeds, caused by a fungus, Balansia strangulans.


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Example Sentences

From the roof hung a gilded cage containing turtle doves, quite white, with a black ring round their necks.

On standing, a brown or black ring is developed where the liquids join, if any nitrate or nitrite is present.

And as the shadows lightened on the long dim flats, we saw in the distance the black ring of the stockade on its little elevation.

The large quills of the back and croup are from seven to twelve inches long, mostly with one central black ring.

It has a naked black ring round its eyes; the wings are black; the rest of the plumage white.

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black ratBlack Rod