REACTION n.
Backward tendency or movement after revolution, reform, or great progress in any direction. The new king had, at the very moment at which his fame and fortune reached the highest point, predicted the coming reaction. Macaulay. Reaction time (Physiol.), in nerve physiology, the interval between the application of a stim…
RUB n.
That which rubs; that which tends to hinder or obstruct motion or progress; hindrance; obstruction, an impediment; especially, a difficulty or obstruction hard to overcome; a pinch. Every rub is smoothed on our way. Shak. To sleep, perchance to dream; ay, there's the rub. Shak. Upon this rub, the English ambassadors th…