This is the 1632nd most frequent French word.
tombé
"Fallen" or "fallen down."
Here, 'tombé' is used as the past tense of the verb 'tomber' (to fall), indicating an action where the subject lost balance and fell physically.
Il est tombé dans l'escalier.
He fell on the stairs.
In this sentence, 'tombée' is used figuratively to describe the onset of night, indicating a transition or change in time.
La nuit est tombée rapidement.
Night fell quickly.
Here, 'tombées' is used to describe the action of leaves falling off the trees, signifying a natural process often associated with autumn.