bombardier

noun
1
the person on a military plane in the US air force who is responsible for aiming and dropping bombs
هدف‌گیر بمب‌ها, افسر بمب‌ریزی, مسئول بمباران, افسر مسئول بمب‌ریزی
2
a member of a low rank in the Royal Artillery (= a part of the British army that uses large guns)
توپچی