thunderclap (sudden, loud thunder caused by a nearby lightning strike); bolt from the blue, thunderclap, thunderbolt (event that is terrible, horrific or unexpected)
counter-thrust where one fencer parries his opponent's thrust and counter attacks in the same maneauver; dirty trick, cheap trick, low blow, rotten move, underhand trick
coup Turc; a complex move involving several pieces in Russian, international, and Brazilian draughts, in which the opponent's pieces, which have already been captured but not yet removed from the board, limit the movement of the king.
a straight razor; ellipsis of rasoir coupe-choux; synonym of rasoir droit; a machete; synonym of machette; a Model 1816 French Army artillery short sword, which was based on the Roman gladius. The sword was generally used for clearing brush and was ineffective as a fighting weapon, without an accompanying shield; swords based on the Model 1816, such as the Model 1832 U.S. Army foot artillery short sword