opera glass

Noun

A pair of small low-powered binoculars for use at a theatrical performance.

Japanese Meaning

劇場やオペラ鑑賞の際に使用される小型の低倍率双眼鏡 / オペラ鑑賞や劇場観劇用の双眼鏡

She lifted her opera glass to her eyes and peered at the conductor's subtle gestures.

彼女はオペラグラスを目に当てて、指揮者の微妙な仕草を覗き込んだ。

Sense（1）

A pair of small low-powered binoculars for use at a theatrical performance.

Talbot," I said, " you have an opera glass. Let me have it." "An opera glass! — no ! — what do you suppose I would be doing with an opera glass ?

opera glasses

（ plural ）