body·build·ing 
/ˈbɑ:diˌbɪldɪŋ/ noun
/ˈbɑ:diˌbɪldɪŋ/ noun [noncount] : the activity of doing exercises (such as lifting weights) to make the muscles of your body larger and stronger
▪ She's been doing competitive bodybuilding for a few years now. — often used before another noun ▪ a bodybuilding competition
▪ She's been doing competitive bodybuilding for a few years now. — often used before another noun ▪ a bodybuilding competition
— body·build·er /ˈbɑ:diˌbɪldɚ/ noun, plural body·build·ers [count]
▪ professional bodybuilders
/ˈbɑ:diˌbɪldɚ/ noun, plural body·build·ers [count] ▪ professional bodybuilders
