Definition of balks:
(n) :
(agriculture) An uncultivated ridge formed in the open field system, caused by the action of ploughing.
(n) :
(archaeology) The wall of earth at the edge of an excavation.
(n) :
Beam, crossbeam; squared timber; a tie beam of a house, stretching from wall to wall, especially when laid so as to form a loft, "the balks".
(n) :
A hindrance or disappointment; a check.
(n) :
A sudden and obstinate stop.
(n) :
(sports) A deceptive motion.