German phrase
Wen meinen Sie mit ~?
Meaning
Who do you mean by ___?
When to use it
This asks who is meant. It is polite and useful in formal conversations.
Example dialogue
Wen meinen Sie mit 'Herr Müller'?
Who do you mean by 'Mr. Müller'?
Ich meine Herrn Müller, den neuen Abteilungsleiter.
I mean Mr. Müller, the new department head.