What is "jumelle"

Jumelle \Ju`melle"\, n. A jumelle opera glass, or the like.

Jumelle \Ju`melle"\, a. [F., fem. of jumeau, fr. L. gemellus. Cf. Gemel, a.] Twin; paired; -- said of various objects made or formed in pairs, as a binocular opera glass, a pair of gimmal rings, etc.

a. twin; paired; said of various objects made or formed in pairs, such as a binocular opera glass, a pair of gimmal rings, etc. n. An object made or formed as a pair, such as a binocular opera glass.