The Collaborative International Dictionary of English v.0.48:

Embracery \Em*bra"cer*y\, n. (Law)
   An attempt to influence a court, jury, etc., corruptly, by
   promises, entreaties, money, entertainments, threats, or
   other improper inducements.
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

EMBRACERY, crim. law. An attempt to corrupt or influence a jury, or any way
incline them to be more favorable to the one side than to the other, by
money, promises, threats, or persuasions; whether the juror on whom such
attempt is made give any verdict or not, or whether the Verdict be true or
false. Hawk. 259; Bac. Ab. Juries, M 3; Co. Litt. 157, b, 369, a; Hob. 294;
Dy. 84, a, pl. 19; Noy, 102; 1 Str. 643; 11 Mod. 111, 118; Com. 601; 5
Cowen, 503.