poise - 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

a state of being balanced in a stable equilibrium

great coolness and composure under strain

poise - verb

• be motionless, in suspension
• prepare (oneself) for something unpleasant or difficult
• cause to be balanced or suspended
• hold or carry in equilibrium

poise - thesaurus

aplomb   assuredness   balance   brace   cool