A purse, prize, or premium is ordinarily some valuable thing, offered by a person for the doing of something hy others, into strife for which he does not enter. He has not a chance of gaining the thing offered; and, lf he abide hy his offer, that he must lose it and give it over to some of those con-tending for it is reasonably certain. Harris v. white, 81 N. Y. 539
Source: Black's Law Dictionary 2nd Ed (1910)