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.
BREAKING DOWN 'Plunge Protection Team - PPT'. Plunge Protection Team was the nickname given to the Working Group by The Washington Post in 1997. The team was initially perceived by some to have been created solely to shore up the markets or even manipulate them. The team was created in response to the 1987 market crash.