In practice. The name of an issue sent out of a court of chancery, or one which exercises chancery jurisdiction, to a court of law, to try the validity of a paper asserted and denied to be a will, to ascertain whether or not the testator did devise, or whether or not that paper was his will. 7 Brown, Pari. Cas. 437; 2Atk. 424; Asay v. Hoover, 5 Pa. 21, 45 Am. Dec. 713.