Three common referents: (1) English given name "Norm/Noam" — most prominently
诺姆·
乔姆斯基 (Noam Chomsky); (2) the Alaskan town of Nome, end-point of the Iditarod sled-dog race; (3) in fantasy translation, "gnome" — though
地精 (dìjīng) is more standard.
诺 (nuò, "to promise") is the workhorse for any "no-/nor-" syllable,
姆 (mǔ) handles "-m/-me" (also in
阿姆斯特朗 Armstrong,
山姆 Sam).