Crabs and their close relatives have 10 legs, arranged in five pairs. Some of their legs are used for walking, while others are used for swimming or defense.
Definition of plunge for English Language Learners. : 1  a sudden fall or jump usually from a high place. : 2  a sudden quick fall in amount, value, etc. : 3  the act of suddenly beginning to be in a particular condition or situation.
If the plunge is the daddy then the cataract is the strong and powerful uncle that you donât want to mess with. Itâs a term used to describe any waterfall with a very high volume of water and they are often accompanied by rapids. Think Niagara Falls youâll get the idea.