Carrel: A partially partitioned nook in or near the stacks in a library, used for private study.[OFr.] [Middle English carole, round dance ring, circle, stall for study. See CAROL.] Carrel,Alexis. 1873-1944. French-born American surgeon and biologist. He won a 1912 Nobel Prize for his work on vascular ligature and grafting of blood vessels and organs.