love lock

Noun

love-lock (plural love-locks)

1. A padlock symbolizing two people's love for each other.
   • In the early 2000s, two of Paris' famous bridges were transformed into what are called “Love Bridges,” their railings completely covered with “love-locks,” padlocks on which couples from around the world carve their initials before attaching them and then throwing the keys into the Seine as a...2014, Joan DeJean, How Paris Became Paris, Bloomsbury Publishing USA, →ISBN, page 208

   Synonyms:

   love lock, love padlock