thresh·old noun \ˈthresh-ˌhōld, ˈthre-ˌshōld\ 1: the plank, stone, or piece of timber that lies under a door : sill 2a : gate, door; b (1) : end, boundary; specifically : the end of a runway (2) : the place or point of entering or beginning : outset 3a : the point at which a physiological or […]