"umlaut" refers to the two little dots placed above a vowel in some languages, like ä, ö, or ü. It changes the way the vowel sounds, making it a bit different from its regular pronunciation. Full definition
Instead, the dressing room only had the soft Swedish umlauts of Sven Goran - Erikson to stir the troops. (caughtoffside.com)
Basler Läckerli (or Leckerli, if your keyboard doesn't do umlauts) is a traditional Swiss spiced cookie bar that is just perfect on a cool autumn afternoon with a cup of tea. (pizzarossa.me)
I added that last umlaut because I didn't feel like there were enough in this blurb. (onpause.org)