To throw one's knife (or other sharp object) in hopes of fatally wounding and/or killing a said individual. This word is derived from throw (meaning to propel through the air with a motion of the hand or arm) and shank (meaning to stab/slice cut or in general kill with a sword/knife or other sharp shiny object). Many times one throshanks someone carotid artery, or the jugular. 'Throshankage' (a hip, cool, or tight way to say throshank, is often portrayed on television and movies.
1.) I just throshanked that man in his face.
2.) Stop runnin' your mouth bizznatch or I shall throshank you into oblivion.