Meaning & Definition of word "Caffeine"

noun:

• 1. A central nervous system stimulant that occurs naturally in coffee, tea, and various other plants, known for its ability to increase alertness.
  • Example: Many people start their day with a cup of coffee to get their caffeine fix.
• 2. A compound that can be synthesized and is used in various beverages and medications to combat fatigue.
  • Example: The energy drink contained a high level of caffeine, keeping me awake late into the night.
• 3. A common ingredient in supplements and weight-loss products, often used to enhance athletic performance.
  • Example: The athlete took a pre-workout supplement that promised increased energy through its caffeine content.
• 4. A substance that can lead to physical dependence and withdrawal symptoms if consumed in large quantities over time.
  • Example: After cutting back on caffeine, I experienced headaches and irritability as withdrawal symptoms.