ヘリコプター
ヘリコプター · herikoputaa · JLPT N2 · noun
helicopter
🚁 ヘリ (heli) = helix, コプター (copter) = copter: spinning-blade flyer
Short for 'helicopter' in Japanese, built from 'helico' (helix, spiral) plus 'copter' (from 'pter', wing). The rotor is a spiral of wings, and ヘリ is the everyday shortcut.