/ˈtænɔɪ ||; ˈtænɔɪ/noun [C] a system used for given spoken information in a public place （在公共场所口头传播信息的）扩音系统，有线广播系统: They announced over the tannoy that our flight was delayed. 他们通过扩音系统宣布我们的航班误点了。