(1):
(v. t.) To represent by a map; - often with out; as, to survey and map, or map out, a county. Hence, figuratively: To represent or indicate systematically and clearly; to sketch; to plan; as, to map, or map out, a journey; to map out business.
(2):
(n.) Anything which represents graphically a succession of events, states, or acts; as, an historical map.
(3):
(n.) A representation of the surface of the earth, or of some portion of it, showing the relative position of the parts represented; - usually on a flat surface. Also, such a representation of the celestial sphere, or of some part of it.