To hold back or restrain a rivers flow. Such as building a dam on it.
it means...that you mean what you mean:)
1.not nice 2.rude and disrespectful to other people 3.opposite of nice 4.cruel 5.harsh through words or actions
it means average distance which equals the total of each distance divided by how many sets of numbers you previously added by.
it means they would not care if someone was as mean to you as mean as they were to you. sometimes it means they do and its just that they are too insecure to tell the truth and use childish anticks...