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.
From Longman Dictionary of Contemporary Englishrollbackrollâ§back /ËrÉÊlbÃ¦k $ ËroÊl-/ noun [countable, uncountable] especially American English an occasion when a tax, price, law etc is reduced to a previous level or changed so that it is the way it used to be â roll back at roll1.