Al·len charge /'a-lən-/ n [from the Supreme Court case Allen v. United States, 164 U.S. 492 (1896), which upheld the right of a trial judge to make such a charge]: a charge to a deadlocked jury to make a further effort to reach a verdict esp. by each juror considering the others' opinions with deference – called also dynamite charge;
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.