(firearms) A ringlike groove, such as that around the cylinder of an elongated bullet for small arms to contain a lubricant, or around the rotating band of a gun projectile to lessen the resistance...

Alternative spelling of djembe

A Dardic people. / Their language, sometimes regarded as multiple languages, which belong to the Dardic family. / A group of Dardic languages spoken in Northern Pakistan.

Any utterance that is not a question.