به خون ( کسی ) تشنه بودنout for blood = after someone's bloodvery angry and wanting to kill someone or to cause them pain or discomfortAfter being attacked, the soldiers were out for blood. اینکه طرف بخواد انتقام چیزیو بگیره یا تلافی کنهمنتقم خون+ عکس و لینک