Q. What is a round cushion called?

Answer

A round cushion is called a bolster pillow. Whether it's made of cotton down or fiber a bolster is a long narrow pillow or cushion. A bolster's many purposes including serving as a decorative element providing support for the back or arms and more. They can be found in a wide range of sizes and forms and often include a zipper or hook-and-loop closure. A foam insert is commonly used to provide additional comfort. Middle English borrowed it from Old English where it was a form of the word for "bag" belg. The word "bolster" was likely first used before to the 12th century. Among the Japanese bolsters are known as dakimakura.