breaker

A breaker is something that breaks through or over something else, often with energy and force. Think of a wave crashing against the shore - it's a breaker.

When we talk about breakers, we usually mean something like a wave or a storm that's powerful enough to overcome obstacles. On a beach, there might be a breaker wall or a breaker zone where big waves crash. In surfing, you're trying to ride the breaker, which is the part of the wave right before it crashes on the shore. If you hear someone talk about a power outage or internet connection that's been broken by a storm, they might call it a breaker too - in this case, something that's usually stable has been interrupted and needs repair.