Débordement

débordement // overflow

Today's prompt, an adjective "overgrown" is translated into French as "débordement" which is a noun  meaning"overflow".

Oh well, doesn't matter. At least now I know a French proverb "La dernière goutte est celle qui fait déborder le vase", literally "It is the last drop that makes the vase to overflow", figuratively "It is the last straw that breaks the camel's back".