Definition of Tannoy™ noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈtænɔɪ//
; NAmE NAmE//ˈtænɔɪ//
(British English) Railway tracks and stations
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a system with loudspeakers used for giving information in a public place to make an announcement over the Tannoy See related entries: Railway tracks and stations Word Origin1920s: contraction of tantalum alloy, which is used as a rectifier in the system.