noun
backswing
Used in sports such as golf, tennis, and baseball to refer to the preparatory backward motion before a swing.
ゴルフでは、バックスイングがスイングの基本です。
In golf, the backswing is the foundation of the swing.
彼はバックスイングを大きく取ってから、力強くボールを打った
He took a big backswing and then hit the ball powerfully.