Definition of biting point:
(n) :
(figuratively) The point or set of circumstances when a particular action can begin or a critical transition can occur.
(n) :
(automotive) The point where the clutch engages when the pedal is released.
(n) :
(more generally) The precise position at which a control mechanism as been moved just enough to cause a device to operate.
(n) :
The level of aggravation that causes someone or something to lash out or bite.
(n) :
The position of the jaw where the upper and lower teeth meet during a bite
(n) :
The point of a blade or similar item where it begins to bite or penetrate.