roll-over arm

[ rohl-oh-ver ]
/ ˈroʊlˌoʊ vər /

noun

an upholstered chair or sofa arm that curves outward and downward.

Origin of roll-over arm

First recorded in 1920–25; adj. use of verb phrase roll over
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019