noun
envelope
B1
‘Couvert’ means envelope. It is a neuter noun (das Couvert) with plural 'Couverts'. The word is a loan from French and is especially common in Swiss and Austrian usage; in Germany 'der Umschlag' is more typical. Declension follows regular patterns for foreign -s plurals.
Examples
Das Couvert liegt auf dem Tisch.
The envelope is on the table.
Die Assistentin legte das Couvert auf den Tisch, obwohl der Chef darum bat, es zuerst zu prüfen.
The assistant put the envelope on the table, although the boss asked to check it first.
Bitte stecken Sie den Brief in ein Couvert.
Please put the letter in an envelope.
Details
Mnemonics
Picture a small paper cover (an envelope) with a postage stamp in the top-right corner.
Sounds like English 'cover' (think of an envelope covering a letter).
das — imagine a neutral object (like a small container) labeled 'das Couvert' to remember neuter gender.
Notes
Couvert is a loanword from French; in some varieties (Swiss German) it can also refer to a small cover charge in restaurants. In standard German it most commonly means 'envelope'.