(uncountable) The condition of being nonessential / (countable, rare) Something that is nonessential

(biology) Across or through an envelope (space between membranes)

A war fought in the United States between 1861 and 1865, between the Northern states (Union) and Southern states (Confederacy).

A village and civil parish in Newark and Sherwood district, Nottinghamshire, England (OS grid ref SK710607). / A habitational surname.