打信號 dǎxìnhào to signal Definitions Defs Origin Strokes Stroke Words Sentences Sents 打 dǎ verb to call; to send to dial or call (a telephone); to send (a telegram or signal)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