1. a plant that grows in hot, dry areas and has thick stems or leaves for storing water and usually sharp spines

Examples

• The desert was filled with tall cacti and other drought-resistant plants.
• She accidentally touched the cactus and got pricked by its spines.
• My grandmother keeps a small cactus on her kitchen windowsill.
• The barrel cactus can store water for months during dry periods.
• We saw enormous saguaro cacti during our trip to Arizona.
• The cactus bloomed with beautiful pink flowers in the spring.