Encroach

To gain unlawfully upon the lands, property or authority of another; as if one man presses upon the grounds of another too far or if a tenant owe two shillings rent-service, and the lord exact three. So, too, the Spencers were said to encroach the king's authority.

Blount; Plowd. 94a.

In the law of easements. Where the owner of an easement alters the dominant tenement, se as to impose an additional restriction or burden on the servient tenement, he is said to commit an encroachment.

Sweet.