enunciator
n.— «I am all too familiar with the 34th Street-8th Avenue Station. Do I go to the downtown local track and hope that a C comes first? Or do I cast my lot with the A express option? It’s maddening. I wonder if they could have some “enunciator” device in the mezzanine below that would indicate whether a local or express was coming.» —“Answers About Mass Transit, Part 3″ New York Times: City Room June 12, 2008. (source: Double-Tongued Dictionary)
Further reading
Words of wisdom from G.K. Chesterton: The world will never starve for want of wonders; but only for want of wonder. This is part of a complete episode. Transcript of “Want of Wonder” G.K. Chesterton is always good for a quotation. And there’s one...
What’s the best way for someone busy to learn lots of new words quickly for a test like the GRE? Looking up their origins can help. Or, record yourself reading the words and definitions and play them back while you’re doing other chores. • Book...
This is clearly a misprint of “annunciator”. Originally, these were simple electromechanical devices which would indicate that an event had occurred and would remain indicating until reset. The word was certainly being used to refer to the large, electromechanical boards indicating train details at stations when I lived in Philadelphia in the eighties.