horizontal privity n1 : the relationship between the parties to a covenant that is based on a mutual or successive interest in the land burdened or benefited by the covenant
2 : the relationship between the original supplier of a product and an ultimate user or a bystander affected by it used esp. in connection with breaches of warranty
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.