potassium bromide(n = noun.substance) - a white crystalline salt (KBr) used as a sedative and in photography;
is a kind of restrainer, salt

antimony potassium tartrate, bromide, bromide paper, diclofenac potassium, hydrogen bromide, ipratropium bromide, methyl bromide, penicillin v potassium, potassium, potassium acid carbonate, potassium alum, potassium bicarbonate, potassium bitartrate, potassium carbonate, potassium chlorate, potassium chloride, potassium cyanide, potassium dichromate, potassium ferrocyanide, potassium hydrogen carbonate, potassium hydrogen tartrate, potassium hydroxide, potassium iodide, potassium muriate, potassium nitrate, potassium permanganate, potassium sodium tartrate, silver bromide