Do you want to keep on improving your English speaking skills? (영어 말하기 스킬을 늘리고 싶나요?) Check out this post to know what elbow grease means. (이 비디오를 보세요.)
“Elbow grease is an idiom that means hard physical labor. It most likely references the effort involved in tasks like scrubbing a sink or sawing wood—your elbow, of course, bending and straightening in turn.”
Ex: You need to put some elbow grease into studying for exams.
To learn more about “elbow grease” please click here.