1. shaking violently and uncontrollably, especially due to muscle spasms or seizures
Usage: present participle of convulse
2. laughing uncontrollably or very hard
Usage: informal

Examples

• The patient was convulsing on the hospital bed.
• She was convulsing with laughter at the comedian’s jokes.
• The earthquake left the building convulsing for several minutes.
• He found himself convulsing after hearing the hilarious story.
• The fever caused the child to start convulsing.
• The audience was convulsing with laughter throughout the performance.