n. The act, state, or fact of appertaining.n. That which appertains or belongs to something else; something belonging to another thing as principal; an adjunct; an appendage; an accessory: as, “appurtenances of majesty,”n. Specifically, in law, a right, privilege, or improvement belonging to a principal property, as a right of pasture in a common attached to an estate, outhouses, gardens, etc., attached to a mansion, and the like.To furnish with by way of appurtenance; supply or equip.