n. 1.tough protective covering of the woody stems and roots of trees and other woody plants 2.a noise resembling the bark of a dog 3.a sailing ship with 3 (or more) masts 4.the sound made by a dog bark v. 1.speak in an unfriendly tone 2.cover with bark 3.remove the bark of a tree 4.make barking sounds 5.tan (a skin) with bark tannins