This is the 12008th most frequent French word.
tombez
"Tombez" means "fall" (imperative form) in English.
Here, 'tombez' is imperative form used to give instructions or warnings.
Ne tombez pas dans ce piège.
Do not fall into this trap.
In this sentence, 'tombez' is in the present tense indicating general action or habit.
Vous tombez souvent quand vous courez.
You often fall when you run.
Although 'tomber' here is in infinitive form, it relates conceptually to 'tombez' through the action it denotes—motion downwards or accidents.