What is Actionable Nuisance?

Legal Definition
Anything injurious to health, or indecent, or offensive to the senses, or an obstruction to the free use of property so as to interfere with the comfortable enjoyment of life or property. Code Civ. Proc. Cal. § 731; Grandona v. Lovdal, 78 Cal. 611, 21 Pac. 366, 12 Am. St. Ren. 121; Caoper v. Overton, 102 Tenn. 211, 52 S, W. 183, 45 L. R. A. 591, 73 Am. St. Rep. 864.
-- Black's Law Dictionary