Auf

Auf (af) noun [ Middle English auph , aulf , from Icelandic ālfr elf. See Elf .] [ Also spelt oaf , ouphe .] A changeling or elf child, -- that is, one left by fairies; a deformed or foolish child; a simpleton; an oaf. [ Obsolete] Drayton.
Found on http://www.encyclo.co.uk/webster/A/145

Auf

• (n.) A changeling or elf child, -- that is, one left by fairies; a deformed or foolish child; a simpleton; an oaf.
Found on http://thinkexist.com/dictionary/meaning/auf/
No exact match found