Crossword Genius

Old Mother Riley's German title (4)

Ross

I believe the answer is:

herr

I'm a little stuck... Click here to teach me more about this clue!

'german title' is the definition.
(I've seen this before)

'old mother riley's' is the wordplay.
'HERR' is hidden within the letters.
However, I am not sure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for herr that I've seen before include "European guy" , "Form of address for German male" , "German man's title" , "Mister in German" , "A German gentleman" .)

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