...and now I was apprenticed to the best editor on an intellectual fashion magazine, and what did I do but balk and balk like a dull cart horse?
-- Sylvia Plath, The Bell Jar, 1963
At the very moment when she would have seized her prey, the hare moved and darted along the balk between the winter rye and the stubble.
-- Leo Tolstoy, War and Peace, 1869
Origin:
Balk comes from the Old Norse balkr meaning "ridge of land." The modern figurative senses of this term relate to obstructions in passage resulting from unplowed land.