shackles, chains, handcuffs, irons (in “too many irons in the fire”)
L'homme est né libre, et partout il est dans les fers.
Man is born free, and everywhere he is in chains.
Je suis mieux enchaîné par son assurance que mes fers.
I am more tightly bound by his confidence than by my chains.
— Army of Shadows (1969)
Il a fallu lui mettre les fers, il se présentait par les fesses.
We had to put him in irons, he was presenting himself buttocks first.
— Les Quatre Cents Coups (1959)