Appurtenance n. That which belongs to something else; an adjunct; an appendage; an accessory; something annexed to another thing more worthy; in common parlance and legal acceptation, something belonging to another thing as principal, and which passes as incident to it, as a right of way, or other easement to land; a right of common to pasture, an outhouse, barn, garden, or orchard, to a house or messuage. In a strict legal sense, land can never pass as an appurtenance to land. "Globes... provided as appurtenances to astronomy." "The structure of the eye, and of its appurtenances."
Collaborative International Dictionary of English 0.48