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.
A balk in baseball is any action by the pitcher that violates the balk rule, which restricts the actions of the pitcher when there is at least one runner on base. The purpose of the balk rule is to protect the runner or runners from being deceived by the pitcher.
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.