1. supplies of something kept for future use
2. money or assets kept available for emergencies or special purposes
3. areas of land set aside for protection of wildlife or natural resources

1. keeps something for future use or a particular purpose

Examples

• The country maintains large oil reserves for emergencies.
• The bank requires customers to keep minimum reserves in their accounts.
• Wildlife reserves protect endangered species from hunting.
• The general called up the reserves when the battle intensified.
• She reserves her best china for special occasions.
• The hotel reserves the right to cancel bookings.
• Emergency food reserves helped the town survive the disaster.