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.
A slide is a piece of glass on which you put something that you want to examine through a microscope. ...a drop of blood on a slide. A slide is a piece of playground equipment that has a steep slope for children to go down for fun. ...two young children playing on a slide. COBUILD Advanced English Dictionary.