noun (n)

• the federal department responsible for maintaining a national energy policy of the United States; created in 1977(noun.group)

  Synonym:
  department of energy, energy, energy department
  

  source: wordnet30
• mature female of mammals of which the male is called `buck'(noun.animal)

  source: wordnet30
• A female deer or antelope; specifically, the female of the fallow deer, of which the male is called a buck. Also applied to the female of other animals, as the rabbit. See the Note under Buck.(noun)

  source: webster1913
• A feat. [Obs.] See Do, n.(noun)

  source: webster1913