quarter, or furlong

Latin ferlang, ferdingus, usually translated as furlong in the Phillimore edition, but sometimes as quarter.

For more detail, see the note to DEV 1,4 in Domesday Book, vol. 9: Devon, edited by Caroline and Frank Thorn (2 vols., Phillimore, 1985), which can also be found online at: https://hydra.hull.ac.uk/resources/hull:535.