0 a padlock (= a small metal lock with a U-shaped bar) that is fixed to a bridge as a sign of love between two people:
The Pont des Arts bridge in Paris has thousands of love locks on it.
Amsterdam has two bridges where romantic couples leave love locks.
Since the 2000s, love locks have proliferated at an increasing number of locations worldwide.
The first love locks were seen a few months before the reconstruction ended 30.