sleek down
US /sliːk daʊn/
UK /sliːk daʊn/

1.
glatt streichen, niederlegen
to make hair or fur smooth and flat, typically by brushing or applying a substance
:
•
She used gel to sleek down her flyaway hairs.
Sie benutzte Gel, um ihre fliegenden Haare glatt zu streichen.
•
He tried to sleek down the dog's fur, but it was too thick.
Er versuchte, das Fell des Hundes glatt zu streichen, aber es war zu dick.