letter bomb noun[ C ] uk /ˈlet.ə ˌbɒm/ us /ˈlet̬.ɚ ˌbɑːm/ a small bomb that is put in an envelope or parcel and posted to someone邮件炸弹 Compare
parcel bombUK SMART Vocabulary: related words and phrases Bombs & missiles anti-mine anti-missile anti-radar anti-satellite anti-ship daisy cutter defuse depth charge dirty bomb enrich minefield missile Molotov cocktail mortar mushroom cloud smart bomb smoke bomb submunition superbomb surface-to-air missile |