"Jock" means someone who is good at sports. Example: Kenny is a real jock - he plays football, baseball, basketball and hockey! #slang #saying #sayings #phrase #phrases #expression #expressions #english #englishlanguage #learnenglish #studyenglish #language #vocabulary #dictionary #grammar #efl #esl #tesl #tefl #toefl #ielts #toeic #englishlearning #jock #sports #sport