Definition of "Poise" :

noun: great coolness and composure under strain

noun: a cgs unit of dynamic viscosity equal to one dyne-second per square centimeter; the viscosity of a fluid in which a force of one dyne per square centimeter maintains a velocity of 1 centimeter per second

noun: a state of being balanced in a stable equilibrium

verb: hold or carry in equilibrium

verb: cause to be balanced or suspended

verb: prepare (oneself) for something unpleasant or difficult

verb: be motionless, in suspension

"The bird poised for a few moments before it attacked."