mussel
US /ˈmʌs.əl/
UK /ˈmʌs.əl/

1.
omułek
a bivalve mollusk, typically with a dark brown or purplish-black shell, living attached to rocks or other hard surfaces in the sea or fresh water.
:
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We had fresh mussels for dinner.
Na obiad jedliśmy świeże omułki.
•
The rocks were covered with tiny mussels.
Skały były pokryte maleńkimi omułkami.