Entry 1 sense Webster, 1913 Gyromancy /(jĭr"ō̇*măn`sy̆ [or] jī"rō̇-)/ · Gyr·o·man·cy · IPA 01 n. A kind of divination performed by drawing a ring or circle, and walking in or around it. 1. A kind of divination performed by drawing a ring or circle, and walking in or around it.