What is Building Lien?

Legal Definition
The statutory lien of a material-man or contractor for the erection of a building. Lumber Co. v. Holt, 60 Neb. 80, 82 N. W. 112, 83 Am. St. Rep. 512; June v. Doke, 35 Tex. Civ. App. 240, 80 S. W. 406.
-- Black's Law Dictionary