1. Naturally occuring substance that is the basis for most latex products, although synthetics are becoming more and more common.
2. Am. Slang - condom
3. Br. Slang - pencil eraser
1. "The crew just harvested a grove of rubber trees."
2. "I have to run out and grab some rubbers before my girlfriend comes over."
3. "Can I borrow a rubber? Mine wore down."