1590s, "study in a cloister," from Medieval Latin carula "small study in a cloister," of unknown origin; perhaps from Latin corolla "little crown, garland," used in various senses of "ring" (e.g. of Stonehenge: "þis Bretons renged about þe feld, þe karole of þe stones beheld," 1330); extended to precincts and spaces enclosed by rails, etc. Specific sense of "private cubicle in a library" is from 1919.
Carrel Car·rel (kə-rěl', kār'əl), 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.