(~s)
Note: The form '~' can also be used as the plural form for meaning 1.
1.
A ~ is a very large fish. Some ~s have very sharp teeth and may attack people.
N-VAR
2.
If you refer to a person as a ~, you disapprove of them because they trick people out of their money by giving bad advice about buying, selling, or investments. (INFORMAL)
Beware the ~s when you are making up your mind how to invest.
N-COUNT disapproval
see also loan ~