The definition of a hustler is a person who is aggressively hard-working who knows how to get around problems, or a person who makes money by doing something dishonest. 1  A person who will stop at nothing to get what he wants and who has aggressively trying to get it is an example of a hustler. A person who pretends to be bad at pool to get people to bet him in a game and make money is an example of a hustler.