Definition of take a swing at in the Idioms Dictionary. take a swing at phrase. What does take a swing at expression mean? Definitions by the largest Idiom Dictionary. Definition of swing - move or cause to move back and forth or from side to side while suspended or on an axis, move by grasping a support from below and. Swing definition: If something swings or if you swing it, it moves repeatedly backwards and forwards or | Meaning, pronunciation, translations and examples.