[land and mark.]

1. A mark to designate the boundary of land; any mark or fixed object; as a marked tree, a stone, a ditch, or a heap of stones, by which the limits of a farm, a town or other portion of territory may be known and preserved.

Thou shalt not remove thy neighbor's landmark. Deuteronomy 19:14.

2. In navigation, any elevated object on land that serves as a guide to seamen.