a strong written or spoken attack (on someone)

The candidate fired/launched yet another broadside at the president. 候选人对总统发起了又一次猛烈抨击。

the action of firing all the guns on one side of a navy ship at the same time

with a side facing something

The car was hit broadside. The front and rear were undamaged. 车身侧面被撞，前面和后面没有损坏。

to hit something on one of its longer sides

A vehicle broadsided the police car on the passenger side. 一辆车撞到了警车乘客一侧的车身。