Cervical cancer is caused by severe abnormal changes in the cells of the cervix. Most precancerous or cancerous cell changes occur in the cervix at the transformation zone, because these cells normally undergo constant change.
In baseball, a balk is called by an umpire. Balk rules protect runners from being deceived by the pitcher. If the ball is thrown before the batter gets settled in the batter's box, the umpire will call a balk. If a pitcher begins his delivery motion but then stops, he'll be called for a balk.
Definition of hock. 1  1a : the tarsal joint or region in the hind limb of a digitigrade quadruped (such as the horse) corresponding to the human ankle but elevated and bending backward â see horse illustrationb : a joint of a fowl's leg that corresponds to the hock of a quadruped.