Mucke

Etymology 1
Perhaps from.

Noun

 * 1) quirk, flaw

Noun

 * 1)  music
 * 2)  a gig or performance of a musician to gain secondary income
 * 1)  a gig or performance of a musician to gain secondary income

Etymology 3
The u is due to Upper German umlaut hindrance before a velar geminate; cf. e.g. for.