the penny drops
US /ðə ˈpɛni drɑps/
UK /ðə ˈpɛni drɑps/
1.
la lumière se fait, comprendre enfin
used to say that someone has finally understood something, especially after a period of not understanding
:
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It took him a while, but then the penny dropped and he realized his mistake.
Il lui a fallu un certain temps, mais ensuite il a compris et a réalisé son erreur.
•
I kept explaining, but it wasn't until I drew a diagram that the penny dropped.
J'ai continué à expliquer, mais ce n'est que lorsque j'ai dessiné un diagramme que la lumière s'est faite.