An artificial intelligence crafted by Merlin of Amber in Roger Zelazny's Amber mythology. Noted for its capability to transport people and objects through Shadow.
"After finishing construction, Merlin set Ghostwheel to work indexing Shadows in the same way that a search engine indexes the internet. Similar to a search engine, Ghostwheel can find, track, and retrieve objects from Shadow; this includes the ability to move people and objects between Shadows. Ghostwheel operates by creating pseudo-Trumps for every mutation of Shadow and then searching them."