n. & v.
n. 1 a a usu. flat representation of the earth's surface, or part of it, showing physical features, cities, etc. (cf. GLOBE). b a diagrammatic representation of a route etc. (drew a map of the journey). 2 a two-dimensional representation of the stars, the heavens, etc., or of the surface of a planet, the moon, etc. 3 a diagram showing the arrangement or components of a thing. 4 sl. the face.
v.tr. (mapped, mapping) 1 represent (a country etc.) on a map. 2 Math. associate each element of (a set) with one element of another set. map out arrange in detail; plan (a course of conduct etc.). off the map colloq. 1 of no account; obsolete. 2 very distant. on the map colloq. prominent, important. wipe off the map colloq. obliterate. mapless adj. mappable adj. mapper n.
[ L mappa napkin: in med.L mappa (mundi) map (of the world) ]