1. the bottom part or foundation of something
2. a main place where someone works or stays
3. one of the four corners that must be touched by a runner in baseball
Usage: baseball

1. to use something as a foundation for something else

1. morally wrong or evil

Examples

• The statue stands on a marble base.
• Our company’s base is in Chicago.
• The runner slid safely into second base.
• Scientists based their theory on years of research.
• Sodium hydroxide is a strong base.
• His base motives were eventually revealed.
• The mountain climbers returned to base camp.
• She based her decision on careful analysis.