tropezaron
Tropezaron is the third-person plural preterite form of the Spanish verb tropezar. This verb translates to "to stumble" or "to trip" in English. Therefore, "tropezaron" means "they stumbled" or "they tripped." This form indicates a past action that was completed and refers to a group of people or things.
For example, "Los niños tropezaron en la calle" would translate to "The children stumbled in the street."