noun 다운로드 🔗공유 톱니바퀴 A wheel with a toothed rim, intended to engage with others, or similar equipment, to form a gear Examples : "The old clock stopped because one of the brass gearwheels had broken its teeth. " 오래된 시계는 놋쇠 톱니바퀴 중 하나가 이빨이 부러져 멈췄다. machine technical part device technology system AI와 채팅어휘 게임독해 연습