n.
1.author of the first novel by an African American that was published in the United States (1808-1870)
2.English writer of novels and short stories (1913-1991)
3.Scottish ornithologist in the United States (1766-1813)
4.United States physicist honored for his work on cosmic microwave radiation (born in 1918)
5.Canadian geophysicist who was a pioneer in the study of plate tectonics (1908-1993)
6.American Revolutionary leader who was one of the signers of the Declaration of Independence (1742-1798)
7.United States entomologist who has generalized from social insects to other animals including humans (born in 1929)
8.Scottish physicist who invented the cloud chamber (1869-1959)
9.United States literary critic (1895-1972) 10.28th President of the United States 11.a peak in the San Juan mountains of Colorado (14,246 feet high)
Idiom of the Day
nail down (someone or something)
to make certain or sure of something
I am trying to nail down the exact time that the meeting will begin.
