A ring of smoke exhaled by a smoker.

To girdle a tree; to kill a tree by removing a ring of bark, phloem, and cambium.

The bark removed by ring-barking / The area of the tree from which the bark has been removed by ring-barking

present participle of ring-bark

Third-person singular simple present indicative form of ring-bark

simple past tense and past participle of ring-bark

(algebra) A ring with 0 ≠ 1, such that every non-zero element a has a multiplicative inverse, meaning an element x with ax = xa = 1.

(chemistry) An item of laboratory equipment consisting of a metal pole with a solid, firm base, used to hold or clamp laboratory glassware and other equipment in place, so that it does not fall down or come apart.

A ring (for one's finger) that shows what school one attended and one's year of graduation.

The trust-inspiring sound, tenor, or impression of being truthful.