bark

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 syn barque 4: the sound made by a dog v 1: speak in an unfriendly tone; "She barked into the dictaphone"

2: cover with bark 3: remove the bark of a tree syn skin 4: make barking sounds; "The dogs barked at the stranger" 5: tan (a skin) with bark tannins

Source: WordNet. Princeton University