1. Noun
A ring; a ringlike part or space.
2. Noun
A space contained between the circumferences of two circles, one within the other.
3. Noun
The solid formed by a circle revolving around a line which is the plane of the circle but does not cut it.
4. Noun
Ring-shaped structures or markings, found in, or upon, various animals.
5. Noun
(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar
Vocabulary classified under Nature and environment
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