Gandalf’s name “in the west”, that is Aman (LotR/670). This name is derived from olor “dream, vision” (UT/396), though its exact meaning is unclear.
Conceptual Development: This name was first written ᴹQ. Olórion in Lord of the Rings drafts, but was quickly changed to its final form ᴹQ. Olórin (WR/153). It may be that Tolkien originally intended the name to mean “✱Son of Dreams”.
Olórin noun name of the Maia that became Gandalf, connected to olos no. 1 (UT:396)