Pistol - Probably from Middle French pistole, which probably via Middle High German forms like pischulle from Czech píšťala (“firearm”, literally “tube, pipe”)
Robot - 'Robot' was first applied as a term for artificial automata in the 1920 play R.U.R. by the Czech writer, Karel Čapek.
Howitzer - The English word howitzer comes from the Czech word houfnice
Kolache - A kolach (also spelled kolache, kolace or kolacky from the Czech and Slovak plural koláče, sg. koláč, diminutive koláčky, meaning "cake/pie") is a type of sweet pastry that holds a portion of fruit surrounded by puffy dough.)