round window

American  

noun

1. a membrane-covered opening in the inner wall of the middle ear that compensates for changes in cochlear pressure.

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Etymology

Origin of round window

First recorded in 1900–05

Example Sentences

The treatment was given as a single injection through a membrane at the base of the cochlea known as the round window.

From Science Daily • Apr. 3, 2026

“The view from that round window felt so good. At night, when cars sped by, their lights on the nearby freeway were pretty. And the cityscape was beautiful,” Maeda said.

From Seattle Times • May 26, 2022

The hit rate on quarterbacks in that late first- to early-second round window is iffy to say the least.

From The Guardian • Apr. 27, 2020

The bar is empty—a heavy kind of empty—and sunlight comes in through a round window in the door.

From The New Yorker • Sep. 10, 2019

The only light there came from a small round window into the next cabin.

From "Carry On, Mr. Bowditch" by Jean Lee Latham