fank

From Scottish Gaelic fang, from Scots fank, perhaps ultimately related to archaic fang (“to seize, catch”).

fank (plural fanks)

1. A pen for enclosing sheep, mainly in the Scottish Highlands.

• John A. Simpson and Edmund S. C. Weiner, editors (1989), “fank”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.