woof       
noun [ C ] uk/wʊf/ us/wʊf/
 (尤用于儿童书中)狗的叫声,汪汪叫声
the sound that a dog makes
  "Miaow, miaow," went the cat. "Woof, woof," went the dog. “喵!喵!”小猫叫道。“汪!汪!”小狗叫道。 
 With a loud woof, the dog came bounding towards them.
 - More examples
 - The only sound was the distant woof of a dog.
 - She could imitate her dogs' woofs so closely that people couldn't tell the difference.
 - Some dog owners claim they know the meaning of their pet's woofs, growls, and whines.