信号塔 xìnhàotǎ signal tower Origin Definitions Defs Strokes Stroke Words Sentences Sents 信号 信號 xìnhào noun signal (prearranged sign) a prearranged sound, light, movement, or sign used to transmit information or instructions, such as a whistle or a flare塔 tǎ noun tower tower; pagoda; Buddhist stupa; pylon; structures shaped like a tower