The Collaborative International Dictionary
Pegomancy
Pegomancy \Peg"o*man`cy\, n. [Gr. phgh` fountain + -mancy.] Divination by fountains. [R.]
Douglas Harper's Etymology Dictionary
pegomancy
"divination by fountains," 1727, from Latinized form of Greek pege "fountain, spring" (of unknown origin) + -mancy.
Wiktionary
pegomancy
n. divination by fountains