To execute a caracole.
A combat maneuver where riders of the same squadron turn simultaneously to their left or to their right.
A spiral staircase.
A half-turn performed by a horse and rider in dressage.
To pound or beat rapidly or violently.
To pulse (often painfully) in time with the circulation of blood.
To vibrate or pulsate with a steady rhythm.
A beating, vibration or palpitation.