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

• department of energy
• energy
• energy department

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

• executive department

2. (noun) mature female of mammals of which the male is called buck'

• eutherian
• eutherian mammal
• placental
• placental mammal