Quick definitions from WordNet (bark)

▸ noun:  a sailing ship with 3 (or more) masts
▸ noun:  the sound made by a dog
▸ noun:  a noise resembling the bark of a dog
▸ noun:  tough protective covering of the woody stems and roots of trees and other woody plants
▸ verb:  tan (a skin) with bark tannins
▸ verb:  speak in an unfriendly tone ("She barked into the dictaphone")
▸ verb:  make barking sounds ("The dogs barked at the stranger")
▸ verb:  remove the bark of a tree
▸ verb:  cover with bark
▸ name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #15925)

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▸ Also see bark