1 just before it is too late -- juste à temps
He jumped out of the way just in the nick of time. Il s’écarta d’un bond juste à temps.
2 to get a little cut -- se faire une entaille
3 steal -- piquer
4 a small cut -- entaille, encorchure
There was a nick in the doorpost.
5 to make a small cut in something -- faire une entaille
He nicked his chin while he was shaving.