(organic chemistry) The arrangement of six carbon atoms in a ring, joined by alternating single- and double bonds, that is present in many organic compounds.

A traditional Irish ring decorated with hands (representing friendship), a heart (love), and a crown (loyalty).

plural of ring gag

(BDSM) A gag with a hollow ring that holds the mouth open.

plural of ring chart

a vaginal or intravaginal ring that releases hormones for the purpose of contraception

A multilevel pie chart that uses concentric circles to visualize hierarchical data.

The ring on a cannon next behind the muzzle ring.

(textiles) A machine for spinning, in which the twist, given to the yarn by a revolving bobbin, is regulated by the drag of a small metal loop which slides around a ring encircling the bobbin, instead of by a throstle.

A ring for fastening a scythe blade to the snath.