What is Obscene?

Legal Definition
Lewd; impure; indecent; calculated to shock the moral sense of man by a disregard of chastity or modesty. Timmons v. U. S., 85 Fed. 205, 30 C. C. A. 74; U. S. v. Harmon (D. C.) 45 Fed. 414; Dunlop v. U. S., 165 U. S. 486, 17 Sup. Ct 375, 41 In Ed. 799; Coin. v. Landis, 8 Phila. (Pa.) 453
-- Black's Law Dictionary