(a) The boundary or limit of a field, mountain, forest, etc.; a border between countries or regions; the shore or bank of a sea or river; mark wei [OE mearc-weg], a road that serves as a boundary……

(a) To set the boundaries or limits of (a plot of land, body of water, etc.); stake out; (b) of a sea or river: to reach the shore; (c) ppl. marked, of armies or troops: spread out, extended in width……