mistrial

noun
1
a trial that is not considered legally valid because of a mistake in the way it has been conducted
لغو محاکمه, ابطال دادرسی, محاکمه نامعتبر, محاکمه باطل
2
a trial in which the jury cannot reach a decision
محاکمه نافرجام, محاکمه بی‌نتیجه