crashing
The Spanish word 'estrellarse' translates into English as 'crashing'. Generally, it is used in the context of a violent and damaging contact or collision. This could mean a physical event, such as a car crash or a plane crash, but can also be used metaphorically for situations where things go terribly wrong. Though violent, it is a relatively common word in Spanish language, similar to the English equivalent 'crashing'.
The car is about to crash into the pole.
In this example, 'estrellarse' is used to express the act of crashing or colliding with something. In particular, it is referencing a car that is dangerously close to colliding ('estrellarse') with a pole.
If you don't brake, you're going to crash.
This sentence demonstrates how 'estrellarse' can be used in a warning. The speaker is warning the listener that if they don't brake or slow down, they will crash ('estrellarse').
The plane crashed into the sea.
In this scenario, 'estrellarse' is used in past tense ('se estrelló') to describe the occurrence of an event where a plane crashed (using 'estrellarse') into the sea.