The kidneys are a pair of organs on either side of the spine in the lower abdomen. Each kidney is about the size of a fist. Attached to the top of each kidney is an adrenal gland. A mass of fatty tissue and an outer layer of fibrous tissue (Gerota's fascia) enclose the kidneys and adrenal glands.
A roll of duct tape. A roll of duct tape. The definition of a roll is something that's been coiled or twisted into a cylinder. An example of a roll is duct tape.
Roll Call Roll Call is a newspaper published in Washington, D.C., United States, from Monday to Friday when the United States Congress is in session and on Mondays only during recess. Roll Call reports news of legislative and political maneuverings on Capitol Hill, as well as political coverage of congressional elections across the country.