Lingaku- to rock one's body backward and forward
- to be convulsed (with laughter etc)
Generated: This meaning is used to describe the physical action of moving one's body forward and backward, often associated with laughter or extreme excitement.
After hearing the joke, he started rocking his body backward and forward with laughter.
Generated: This meaning refers specifically to being overcome by laughter or another strong emotion, often resulting in uncontrollable shaking or movement.