科尔特 most commonly refers to Colt's Manufacturing Company — Samuel Colt's revolvers became symbols of the American Wild West (the Colt Single Action Army a.k.a. 'Peacemaker'). The transliteration uses
科尔 (kē'ěr) for 'Col' +
特 (tè) for the final t — the
尔 syllable is a stock filler for the English /ə(r)/ sound.