die Raute
hash sign
The symbol #, which is used on keyboards and telephones. It is also called the hashtag symbol.
Bitte geben Sie Ihre PIN ein und bestätigen Sie mit der Raute-Taste.
Please enter your PIN and confirm with the hash key.

hash sign / rhombus
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hash sign
The symbol #, which is used on keyboards and telephones. It is also called the hashtag symbol.
Bitte geben Sie Ihre PIN ein und bestätigen Sie mit der Raute-Taste.
Please enter your PIN and confirm with the hash key.

You can recognize the meaning of 'Raute' from the context: in connection with telephones or social media, it refers to the symbol #. In mathematics, it is a geometric shape. In a historical context, it may refer to a coat of arms or a plant.
Drücken Sie die Raute, um fortzufahren.
Press the hash key to continue.
When the symbol # is meant, typical combinations are 'die Raute-Taste' (the hash key, on a telephone or keyboard) or the instruction 'mit der Raute bestätigen' (to confirm with the hash key).
Nach der PIN-Eingabe drücken Sie bitte die Raute-Taste.
After entering your PIN, please press the hash key.
In geometry, 'die Raute' is the German technical term for a rhombus. All four sides are the same length, but the angles do not have to be 90 degrees.
Der Lehrer ließ uns eine Raute mit einer Seitenlänge von 5 cm zeichnen.
The teacher had us draw a rhombus with a side length of 5 cm.
In Germany, the Raute is especially well known through the coat of arms and flag of Bavaria. The pattern of blue and white lozenges is an important symbol of the federal state.
Die bayerische Flagge zeigt ein Muster aus weißen und blauen Rauten.
The Bavarian flag shows a pattern of white and blue lozenges.
hashtag
'der Hashtag' and 'die Raute' both have to do with the # sign. 'die Raute' means the symbol itself, for example on a keyboard or telephone. 'der Hashtag' means a word or phrase with this symbol on social networks, so that posts on a topic can be found. Learners may confuse the words because the # sign is also called the hashtag symbol. As a practical rule: if you are talking about the symbol, 'Raute' fits. If you are talking about a tagged keyword on the internet, 'Hashtag' fits.

Drücken Sie zuerst die Raute und geben Sie dann Ihre Kundennummer ein.
First press the hash sign, then enter your customer number.
Unter dem Hashtag #Sommerreise finde ich viele Fotos vom Meer.
Under the hashtag #Sommerreise, I find many photos of the sea.