Same word as stop:

bar, barricade, blank wall, block, blockade, break, break off, brick wall, cease, cessation, check, close, closing, conclusion, control, cutoff, desistance, discontinuation, ending, fence, finish, freeze, grinding halt, hindrance, layoff, letup, lull, pause, plug, roadblock, screeching halt, standstill, stay, stoppage, termination, wall