What is the meaning of Auf?

A changeling or elf child; a child left by fairies.

[with dative] on, upon (positioned at the top of)

[with accusative] on, onto, up (moving to the top of)

[with accusative] on (indicating responsibility)

[with dative] in, at; used with certain nouns instead of bei or in

[with accusative] to; used with certain nouns instead of zu or in

in (see usage note below)

in (of a word: ending with some sound or syllable)

on (a day; usually of the week)

[with accusative] for (during the continuation of)

[with accusative] to, for (indicating purpose, goal or wish)

[with accusative] by (used to separate dimensions when describing the size of something)

up; awake; out of bed

carry on (continue or proceed as before)

Source: wiktionary.org

See also