柯林斯词典cannonball /ˈkænənˌbɔːl/ (also cannon ball) (cannonballs) 1. N-COUNT A cannonball is a heavy metal ball that is fired from a cannon. 砲彈 返回 cannonball剑桥词典a heavy metal or stone ball shot from a cannon （用舊式大砲發射的）鉄彈，石彈 返回 cannonball