To prohibit or forbid. To deny. To contest and endeavor to defeat a claim or demand made against one in a court of justice. Boehmer v. Irrigation Dist, 117 Cal. 19, 48 Pac. 908. To oppose, repel, or resist.
In covenants of warranty in deeds, it means to protect, to maintain or keep secure, to guaranty, to agree to indemnify.