was hanging around, was lingering
Je traînais par là madame.
I was just hanging around, madam.
— Picnic (1955)
Où est-ce que tu traînais ?
Where were you hanging out?
— Des étoiles sur la terre (2007)
Mais quand j'étais près de la cabine, je traînais un peu.
But when I was near the booth, I hung around for a bit.
— Nos années sauvages (1990)
Ils marchaient vite et je traînais derrière.
They were walking fast and I was lagging behind.