hail of bullets; heavy bombardment
Rare literary term for an intense barrage of gunfire, likening bullets to driving rain.
The battlefield presented a scene of a hail of bullets.
砲火 refers to artillery fire or gunfire in general, while 弾丸飛雨 is a more vivid, literary expression specifically emphasizing a dense, rain-like barrage of bullets.
Compound of 弾丸 (bullet) + 飛雨 (flying rain), literally 'bullet flying rain'. The exact origin is uncertain; it is a rare literary coinage.