A name given to a ghost from the frequent knockings which it made (from chapper, a door-knocker). One such chappie haunted the mansion of Houndwood, in Berwickshire. A knocking was repeatedly heard at the front door of this house, but only on one occasion was any one seen; a grand lady swept in, and went up the staircase, but was never seen again in or out of the house.
- Henderson, W. (1879). Notes on the folk-lore of the northern countries of England and the borders. Covent Garden: W. Satchell, Peyton and Co., p. 269.
- Wright, J. (1898). The English dialect dictionary. Vol. 1. London: H. Frowde.