[stun] vt stunned ; stun.ning [ME, modif. of MF estoner--more at astonish] (14c) 1: to make senseless, groggy, or dizzy by or as if by a blow: daze
2: to shock with noise
3: to overcome esp. with paralyzing astonishment or disbelief
[2]stun n (1727): the effect of something that stuns: shock