How to get a specific dictionary to be used to show a word entry in the inital dictionary view that arises from Spotlight?
Great question and it's one that comes up more often than not.

Here is a link to a similar question submitted to AskDifferent a few years ago: How to switch language of OS X dictionary?

You could also try this:


Open the Dictionary app and navigate to Dictionary/Preferences.





In Preferences select or de-select the languages you prefer.





It may be that 'German' is still set as the preferred language, so de-selecting it may then allow you to remove it as you were initially attempting to do.


Also, after making these changes, try restarting your Mac. Sometimes this helps things reboot in proper order and get rid of processes and other 'crud' that may be clogging the Mac's Memory.

'Hope this helps!

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