noun
bag, sack
B1
Sack (der) means 'bag' or 'sack'. Masculine noun; plural Säcke (note the umlaut a→ä). Declension can show plural dative den Säcken and genitive singular des Sacks. Common uses include sack for carrying goods; plural formation involves vowel change plus -e, an irregular but regular pattern for some German nouns.
Examples
Der Sack ist schwer, kannst du ihn tragen?
The bag is heavy — can you carry it?
Er packte die Äpfel in einen Sack.
He packed the apples into a sack.
Weil sich der Griff am Sack gelöst hatte, musste der Fahrer das Gepäck neu verpacken, bevor die Reise weiterging.
Because the handle on the sack had come loose, the driver had to repack the luggage before the journey continued.
Details
Mnemonics
Same as English 'sack' — helps you remember meaning immediately.
der (masculine): imagine a male porter carrying a heavy sack.
Notes
Common everyday word for sacks or simple bags; plural is 'Säcke'.