The term PRES. LINCOLN is a reference to the 16th President of the United States, Abraham Lincoln. The crossword solution for this term is ABE, which is the three-letter abbreviation of his first name. Abraham Lincoln was an American statesman and lawyer who served as the 16th President of the United States from 1861 until his assassination in 1865. He is widely regarded as one of the greatest presidents in American history and is best known for his role in preserving the Union and abolishing slavery.