bro·mo·benzyl cyanide \| ̷ ̷ ̷ ̷+...-\noun alsobrom·benzyl cyanide\(ˈ)brōm+|...-\ Etymology:brom- + benzyl cyanide : a light-yellow oily lacrimatory compound C6H5CHBrCN having an odor of sour fruit that is made by brominating benzyl cyanide; α-bromo-phenyl-aceto-nitrile