loudhailer
loud hail er |ˌloudˈhālər | ▶noun chiefly Brit. another term for bullhorn.
loud |hail ¦er |laʊdˈheɪlə (r )| ▶noun Brit. an electronic device used to amplify the sound of a person's voice so that it can be heard at a distance; a megaphone.
l ò ud h á il er 名詞 C ｟英 ｠拡声器 (megaphone, ｟米 ｠bullhorn ).
The Wordsmith Dictionary
The Wordsmith Dictionary