The ever-charming Futility Closet notes that in the Wingdings font, characters 0×25, 0×26, and 0×27 depict a bell, a book, and a candle.
The phrase "bell, book, and candle" traces back to a 9th century excommunication ritual in which ringing a bell evokes a death toll, closing a religious text symbolizes separation from the church, and snuffing out a candle symbolizes the excommunicant's soul being extinguished.