Definitions of 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

  Example: "She barked into the dictaphone"

• verb:   make barking sounds

  Example: "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)