The word "snap" can refer to a few different actions or meanings. Generally, it means to make a quick, sharp noise or movement. For instance, when you quickly break a stick, it makes a "snap" sound. It can also refer to taking a photograph quickly. Additionally, "snap" can describe a sudden change in mood or tension, like when someone snaps and gets angry unexpectedly.
The word "snap" comes from Middle English "snappen," which means to bite, catch, or seize. The origin can be traced back to Old English "sneap," meaning to nip, which is related to the Germanic languages as well.