(n)divination by means of signs connected with the earth (as points taken at random or the arrangement of particles thrown down at random or from the configuration of a region and its relation to another)
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
n. [ OE. geomance, geomancie, F. géomance, géomancie, LL. geomantia, fr. Gr. ge`a, gh^, the earth + mantei`a divination. ] A kind of divination by means of figures or lines, formed by little dots or points, originally on the earth, and latterly on paper.