DICT.TW Dictionary Taiwan

 tit for tat /ˌtɪtfɚ/
 以牙還牙,針鋒相對,一報還一報

 Tit n.
 1. A small horse.
 2. A woman; -- used in contempt.
 3. A morsel; a bit.
 4.  Zool. (a) Any one of numerous species of small singing birds belonging to the families Paridae and Leiotrichidae; a titmouse. (b) The European meadow pipit; a titlark.
 Ground tit. Zool. See Wren tit, under Wren.
 Hill tit Zool., any one of numerous species of Asiatic singing birds belonging to Siva, Milna, and allied genera.
 Tit babbler Zool., any one of several species of small East Indian and Asiatic timaline birds of the genus Trichastoma.
 Tit for tat. [Probably for tip for tap. See Tip a slight blow.] An equivalent; retaliation.
 Tit thrush Zool., any one of numerous species of Asiatic and East Indian birds belonging to Suthora and allied genera. In some respects they are intermediate between the thrushes and titmice.
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 tit for tat
      n : an equivalent given in return