SWAYING

To move or swing from side to side; or backward and forward; to rock.

"sway to the music;  The trees swayed in the breeze."

To move or wield with the hand; to swing; to wield.

"to sway the sceptre"

To influence or direct by power, authority, persuasion, or by moral force; to rule; to govern; to guide. Compare persuade.

"Do you think you can sway their decision?"

The motion of something that sways.

An injury caused to a horse's back by violent strains or overloading.