English to English

noun (n)

• a dowitcher with a grey back(noun.animal)

  Synonym:
  greyback, limnodromus griseus
  

  source: wordnet30
• a sandpiper that breeds in the Arctic and winters in the southern hemisphere(noun.animal)

  Synonym:
  calidris canutus, greyback, knot
  

  source: wordnet30
• The California gray whale.(noun)

  source: webster1913