What is the meaning of the English word… SPASM?

Definition:

(countable noun)

• a temporary and sudden release of energy, emotion or stress
• a sudden and usually brief occurrence of something you cannot control
•  a sudden uncontrolled and often painful tightening of a muscle

Examples:

1. Maria’s muscles went into spasms when she finished her 23 kilometre run.

2. He had a long coughing spasm.

3. She is suffering from spasms of guilt because she went on a big spending spree.

4. Just before I went onto the stage to give my presentation, I was seized with a spasm of anxiety.